diff --git a/chrome/browser/extensions/active_tab_unittest.cc b/chrome/browser/extensions/active_tab_unittest.cc
index f615724..93bd889 100644
--- a/chrome/browser/extensions/active_tab_unittest.cc
+++ b/chrome/browser/extensions/active_tab_unittest.cc
@@ -15,7 +15,6 @@
 #include "chrome/browser/sessions/session_id.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_builder.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "chrome/common/extensions/permissions/permissions_data.h"
 #include "chrome/common/extensions/value_builder.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
@@ -28,6 +27,7 @@
 #include "content/public/common/frame_navigate_params.h"
 #include "content/public/common/page_transition_types.h"
 #include "content/public/test/test_browser_thread.h"
+#include "extensions/common/features/feature.h"
 
 using base::DictionaryValue;
 using base::ListValue;
diff --git a/chrome/browser/extensions/admin_policy.cc b/chrome/browser/extensions/admin_policy.cc
index 608fdea..0f1e95ca 100644
--- a/chrome/browser/extensions/admin_policy.cc
+++ b/chrome/browser/extensions/admin_policy.cc
@@ -6,7 +6,7 @@
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
@@ -116,5 +116,5 @@
   return ManagementPolicyImpl(extension, error, false);
 }
 
-}  // namespace
-}  // namespace
+}  // namespace admin_policy
+}  // namespace extensions
diff --git a/chrome/browser/extensions/admin_policy_unittest.cc b/chrome/browser/extensions/admin_policy_unittest.cc
index b5d3b84..6774f20 100644
--- a/chrome/browser/extensions/admin_policy_unittest.cc
+++ b/chrome/browser/extensions/admin_policy_unittest.cc
@@ -6,7 +6,7 @@
 
 #include "base/values.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 #include "extensions/common/manifest_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
diff --git a/chrome/browser/extensions/api/management/management_apitest.cc b/chrome/browser/extensions/api/management/management_apitest.cc
index 6e98c56..b0288052 100644
--- a/chrome/browser/extensions/api/management/management_apitest.cc
+++ b/chrome/browser/extensions/api/management/management_apitest.cc
@@ -17,8 +17,8 @@
 #include "chrome/browser/ui/browser_iterator.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
-#include "chrome/common/extensions/manifest.h"
 #include "content/public/test/test_utils.h"
+#include "extensions/common/manifest.h"
 
 using extensions::Extension;
 using extensions::Manifest;
diff --git a/chrome/browser/extensions/api/messaging/native_message_process_host.cc b/chrome/browser/extensions/api/messaging/native_message_process_host.cc
index 40535eb..32f3389 100644
--- a/chrome/browser/extensions/api/messaging/native_message_process_host.cc
+++ b/chrome/browser/extensions/api/messaging/native_message_process_host.cc
@@ -13,8 +13,8 @@
 #include "chrome/browser/extensions/api/messaging/native_messaging_host_manifest.h"
 #include "chrome/browser/extensions/api/messaging/native_process_launcher.h"
 #include "chrome/common/chrome_version_info.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "extensions/common/constants.h"
+#include "extensions/common/features/feature.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
diff --git a/chrome/browser/extensions/api/messaging/native_messaging_apitest.cc b/chrome/browser/extensions/api/messaging/native_messaging_apitest.cc
index d5d712a..f42cf4a 100644
--- a/chrome/browser/extensions/api/messaging/native_messaging_apitest.cc
+++ b/chrome/browser/extensions/api/messaging/native_messaging_apitest.cc
@@ -10,7 +10,7 @@
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
-#include "chrome/common/extensions/features/feature.h"
+#include "extensions/common/features/feature.h"
 
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, NativeMessageBasic) {
   base::ScopedTempDir temp_dir;
diff --git a/chrome/browser/extensions/api/notifications/notifications_api.cc b/chrome/browser/extensions/api/notifications/notifications_api.cc
index c69f4cb..9c330aa 100644
--- a/chrome/browser/extensions/api/notifications/notifications_api.cc
+++ b/chrome/browser/extensions/api/notifications/notifications_api.cc
@@ -18,9 +18,9 @@
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
+#include "extensions/common/features/feature.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
diff --git a/chrome/browser/extensions/api/notifications/notifications_apitest.cc b/chrome/browser/extensions/api/notifications/notifications_apitest.cc
index c745215..bd85021 100644
--- a/chrome/browser/extensions/api/notifications/notifications_apitest.cc
+++ b/chrome/browser/extensions/api/notifications/notifications_apitest.cc
@@ -8,9 +8,9 @@
 #include "chrome/browser/extensions/api/notifications/notifications_api.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_utils.h"
+#include "extensions/common/features/feature.h"
 #include "ui/message_center/message_center.h"
 #include "ui/message_center/message_center_switches.h"
 #include "ui/message_center/message_center_util.h"
diff --git a/chrome/browser/extensions/api/storage/managed_value_store_cache.cc b/chrome/browser/extensions/api/storage/managed_value_store_cache.cc
index 8e98df2..13a5fde 100644
--- a/chrome/browser/extensions/api/storage/managed_value_store_cache.cc
+++ b/chrome/browser/extensions/api/storage/managed_value_store_cache.cc
@@ -26,13 +26,13 @@
 #include "chrome/common/extensions/api/storage/storage_schema_manifest_handler.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_set.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/permissions/api_permission.h"
 #include "components/policy/core/common/policy_schema.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
+#include "extensions/common/manifest.h"
 #include "extensions/common/manifest_constants.h"
 
 using content::BrowserThread;
diff --git a/chrome/browser/extensions/api/storage/settings_sync_unittest.cc b/chrome/browser/extensions/api/storage/settings_sync_unittest.cc
index 903ede8..0480062 100644
--- a/chrome/browser/extensions/api/storage/settings_sync_unittest.cc
+++ b/chrome/browser/extensions/api/storage/settings_sync_unittest.cc
@@ -17,8 +17,8 @@
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/test_extension_service.h"
 #include "chrome/browser/value_store/testing_value_store.h"
-#include "chrome/common/extensions/manifest.h"
 #include "content/public/test/test_browser_thread.h"
+#include "extensions/common/manifest.h"
 #include "sync/api/sync_change_processor.h"
 #include "sync/api/sync_error_factory.h"
 #include "sync/api/sync_error_factory_mock.h"
diff --git a/chrome/browser/extensions/api/tab_capture/tab_capture_api.cc b/chrome/browser/extensions/api/tab_capture/tab_capture_api.cc
index 25f17c4..47b2ee7b 100644
--- a/chrome/browser/extensions/api/tab_capture/tab_capture_api.cc
+++ b/chrome/browser/extensions/api/tab_capture/tab_capture_api.cc
@@ -21,9 +21,9 @@
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
+#include "extensions/common/features/feature.h"
 #include "extensions/common/features/feature_provider.h"
 
 using extensions::api::tab_capture::MediaStreamConstraint;
diff --git a/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc b/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
index 1e75fa71..c8bb5cb 100644
--- a/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
+++ b/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
@@ -20,12 +20,12 @@
 #include "chrome/common/extensions/feature_switch.h"
 #include "chrome/common/extensions/features/base_feature_provider.h"
 #include "chrome/common/extensions/features/complex_feature.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "chrome/common/extensions/features/simple_feature.h"
 #include "chrome/test/base/test_switches.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/common/content_switches.h"
+#include "extensions/common/features/feature.h"
 
 namespace chrome {
 
diff --git a/chrome/browser/extensions/api/tab_capture/tab_capture_performancetest.cc b/chrome/browser/extensions/api/tab_capture/tab_capture_performancetest.cc
index 42d19d4..c63603827 100644
--- a/chrome/browser/extensions/api/tab_capture/tab_capture_performancetest.cc
+++ b/chrome/browser/extensions/api/tab_capture/tab_capture_performancetest.cc
@@ -21,7 +21,6 @@
 #include "chrome/common/extensions/feature_switch.h"
 #include "chrome/common/extensions/features/base_feature_provider.h"
 #include "chrome/common/extensions/features/complex_feature.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "chrome/common/extensions/features/simple_feature.h"
 #include "chrome/test/base/test_launcher_utils.h"
 #include "chrome/test/base/test_switches.h"
@@ -30,6 +29,7 @@
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/common/content_switches.h"
+#include "extensions/common/features/feature.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/compositor/compositor_switches.h"
 #include "ui/gl/gl_switches.h"
diff --git a/chrome/browser/extensions/api/web_request/web_request_api.cc b/chrome/browser/extensions/api/web_request/web_request_api.cc
index acccfcf..46fc10a 100644
--- a/chrome/browser/extensions/api/web_request/web_request_api.cc
+++ b/chrome/browser/extensions/api/web_request/web_request_api.cc
@@ -44,7 +44,6 @@
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_messages.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "chrome/common/extensions/permissions/permissions_data.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_message_filter.h"
@@ -54,6 +53,7 @@
 #include "content/public/browser/user_metrics.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/event_filtering_info.h"
+#include "extensions/common/features/feature.h"
 #include "extensions/common/url_pattern.h"
 #include "grit/generated_resources.h"
 #include "net/base/auth.h"
diff --git a/chrome/browser/extensions/api/web_request/web_request_api_unittest.cc b/chrome/browser/extensions/api/web_request/web_request_api_unittest.cc
index ac8fb70..2c8774f 100644
--- a/chrome/browser/extensions/api/web_request/web_request_api_unittest.cc
+++ b/chrome/browser/extensions/api/web_request/web_request_api_unittest.cc
@@ -31,7 +31,6 @@
 #include "chrome/browser/net/chrome_network_delegate.h"
 #include "chrome/common/extensions/api/web_request.h"
 #include "chrome/common/extensions/extension_messages.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_pref_service_syncable.h"
@@ -39,6 +38,7 @@
 #include "chrome/test/base/testing_profile_manager.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/test/test_browser_thread_bundle.h"
+#include "extensions/common/features/feature.h"
 #include "net/base/auth.h"
 #include "net/base/capturing_net_log.h"
 #include "net/base/net_util.h"
diff --git a/chrome/browser/extensions/api/web_request/web_request_apitest.cc b/chrome/browser/extensions/api/web_request/web_request_apitest.cc
index 7c7acb8..05de8d8 100644
--- a/chrome/browser/extensions/api/web_request/web_request_apitest.cc
+++ b/chrome/browser/extensions/api/web_request/web_request_apitest.cc
@@ -13,13 +13,13 @@
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/login/login_prompt.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "chrome/common/extensions/features/feature.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/browser_test_utils.h"
+#include "extensions/common/features/feature.h"
 #include "net/dns/mock_host_resolver.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
diff --git a/chrome/browser/extensions/chrome_app_api_browsertest.cc b/chrome/browser/extensions/chrome_app_api_browsertest.cc
index 97f923d..1c5e417e 100644
--- a/chrome/browser/extensions/chrome_app_api_browsertest.cc
+++ b/chrome/browser/extensions/chrome_app_api_browsertest.cc
@@ -16,10 +16,10 @@
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/browser_test_utils.h"
+#include "extensions/common/manifest.h"
 #include "net/dns/mock_host_resolver.h"
 #include "url/gurl.h"
 
diff --git a/chrome/browser/extensions/crx_installer.cc b/chrome/browser/extensions/crx_installer.cc
index 68d715b..fac1e88 100644
--- a/chrome/browser/extensions/crx_installer.cc
+++ b/chrome/browser/extensions/crx_installer.cc
@@ -38,13 +38,13 @@
 #include "chrome/common/extensions/extension_file_util.h"
 #include "chrome/common/extensions/extension_icon_set.h"
 #include "chrome/common/extensions/feature_switch.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/manifest_handlers/shared_module_info.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/resource_dispatcher_host.h"
 #include "content/public/browser/user_metrics.h"
+#include "extensions/common/manifest.h"
 #include "extensions/common/user_script.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
diff --git a/chrome/browser/extensions/crx_installer.h b/chrome/browser/extensions/crx_installer.h
index d2bcbbb0..1d40e2a 100644
--- a/chrome/browser/extensions/crx_installer.h
+++ b/chrome/browser/extensions/crx_installer.h
@@ -18,7 +18,7 @@
 #include "chrome/browser/extensions/sandboxed_unpacker.h"
 #include "chrome/browser/extensions/webstore_installer.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 #include "sync/api/string_ordinal.h"
 
 class ExtensionService;
diff --git a/chrome/browser/extensions/default_apps.h b/chrome/browser/extensions/default_apps.h
index ea41826..7a950e0 100644
--- a/chrome/browser/extensions/default_apps.h
+++ b/chrome/browser/extensions/default_apps.h
@@ -7,7 +7,7 @@
 
 #include "base/basictypes.h"
 #include "chrome/browser/extensions/external_provider_impl.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 
 class Profile;
 
diff --git a/chrome/browser/extensions/extension_browsertest.h b/chrome/browser/extensions/extension_browsertest.h
index cc715e7..3c482938 100644
--- a/chrome/browser/extensions/extension_browsertest.h
+++ b/chrome/browser/extensions/extension_browsertest.h
@@ -17,12 +17,12 @@
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/feature_switch.h"
 #include "chrome/common/extensions/features/feature_channel.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/web_contents.h"
+#include "extensions/common/manifest.h"
 
 class ExtensionProcessManager;
 class ExtensionService;
diff --git a/chrome/browser/extensions/extension_function_test_utils.h b/chrome/browser/extensions/extension_function_test_utils.h
index a711397..b2d7756 100644
--- a/chrome/browser/extensions/extension_function_test_utils.h
+++ b/chrome/browser/extensions/extension_function_test_utils.h
@@ -8,7 +8,7 @@
 #include <string>
 
 #include "base/memory/ref_counted.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 
 class AsyncExtensionFunction;
 class Browser;
diff --git a/chrome/browser/extensions/extension_icon_image_unittest.cc b/chrome/browser/extensions/extension_icon_image_unittest.cc
index 346a2ff0..0d9b9a7 100644
--- a/chrome/browser/extensions/extension_icon_image_unittest.cc
+++ b/chrome/browser/extensions/extension_icon_image_unittest.cc
@@ -11,10 +11,10 @@
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
+#include "extensions/common/manifest.h"
 #include "grit/theme_resources.h"
 #include "skia/ext/image_operations.h"
 #include "testing/gtest/include/gtest/gtest.h"
diff --git a/chrome/browser/extensions/extension_install_prompt.cc b/chrome/browser/extensions/extension_install_prompt.cc
index 4f1363a..544c04e 100644
--- a/chrome/browser/extensions/extension_install_prompt.cc
+++ b/chrome/browser/extensions/extension_install_prompt.cc
@@ -27,7 +27,6 @@
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_icon_set.h"
 #include "chrome/common/extensions/feature_switch.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
 #include "chrome/common/extensions/permissions/permission_set.h"
 #include "chrome/common/extensions/permissions/permissions_data.h"
@@ -35,6 +34,7 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "extensions/common/extension_resource.h"
+#include "extensions/common/manifest.h"
 #include "extensions/common/manifest_constants.h"
 #include "extensions/common/url_pattern.h"
 #include "grit/chromium_strings.h"
diff --git a/chrome/browser/extensions/extension_prefs.cc b/chrome/browser/extensions/extension_prefs.cc
index 8dcdfd89..f8442b0 100644
--- a/chrome/browser/extensions/extension_prefs.cc
+++ b/chrome/browser/extensions/extension_prefs.cc
@@ -22,7 +22,6 @@
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/feature_switch.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
 #include "chrome/common/extensions/permissions/permission_set.h"
 #include "chrome/common/extensions/permissions/permissions_info.h"
@@ -31,6 +30,7 @@
 #include "components/user_prefs/pref_registry_syncable.h"
 #include "content/public/browser/notification_service.h"
 #include "extensions/browser/pref_names.h"
+#include "extensions/common/manifest.h"
 #include "extensions/common/url_pattern.h"
 #include "extensions/common/user_script.h"
 #include "grit/generated_resources.h"
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 199b1f7..8c99140 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -79,7 +79,6 @@
 #include "chrome/common/extensions/feature_switch.h"
 #include "chrome/common/extensions/features/feature_channel.h"
 #include "chrome/common/extensions/incognito_handler.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/manifest_handlers/app_isolation_info.h"
 #include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
 #include "chrome/common/extensions/manifest_handlers/shared_module_info.h"
@@ -99,6 +98,7 @@
 #include "content/public/browser/url_data_source.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/error_utils.h"
+#include "extensions/common/manifest.h"
 #include "grit/generated_resources.h"
 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 #include "sync/api/sync_change.h"
diff --git a/chrome/browser/extensions/extension_service.h b/chrome/browser/extensions/extension_service.h
index 8766017..01fabca 100644
--- a/chrome/browser/extensions/extension_service.h
+++ b/chrome/browser/extensions/extension_service.h
@@ -35,10 +35,10 @@
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_set.h"
-#include "chrome/common/extensions/manifest.h"
 #include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+#include "extensions/common/manifest.h"
 #include "extensions/common/one_shot_event.h"
 #include "sync/api/string_ordinal.h"
 #include "sync/api/sync_change.h"
diff --git a/chrome/browser/extensions/extension_special_storage_policy_unittest.cc b/chrome/browser/extensions/extension_special_storage_policy_unittest.cc
index 4141353..6b23aa8f 100644
--- a/chrome/browser/extensions/extension_special_storage_policy_unittest.cc
+++ b/chrome/browser/extensions/extension_special_storage_policy_unittest.cc
@@ -9,9 +9,9 @@
 #include "chrome/common/content_settings.h"
 #include "chrome/common/content_settings_types.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
+#include "extensions/common/manifest.h"
 #include "extensions/common/manifest_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
diff --git a/chrome/browser/extensions/extension_system.cc b/chrome/browser/extensions/extension_system.cc
index 06393029..0b75800 100644
--- a/chrome/browser/extensions/extension_system.cc
+++ b/chrome/browser/extensions/extension_system.cc
@@ -41,10 +41,10 @@
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/features/feature_channel.h"
-#include "chrome/common/extensions/manifest.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/url_data_source.h"
 #include "extensions/common/constants.h"
+#include "extensions/common/manifest.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/app_mode/app_mode_utils.h"
diff --git a/chrome/browser/extensions/extension_webkit_preferences.cc b/chrome/browser/extensions/extension_webkit_preferences.cc
index 025dcc59..bf9b7a9 100644
--- a/chrome/browser/extensions/extension_webkit_preferences.cc
+++ b/chrome/browser/extensions/extension_webkit_preferences.cc
@@ -7,7 +7,7 @@
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 #include "webkit/common/webpreferences.h"
 
 namespace extension_webkit_preferences {
@@ -61,4 +61,4 @@
   }
 }
 
-}  // extension_webkit_preferences
+}  // namespace extension_webkit_preferences
diff --git a/chrome/browser/extensions/external_policy_loader_unittest.cc b/chrome/browser/extensions/external_policy_loader_unittest.cc
index 4270a24a..fa6039d 100644
--- a/chrome/browser/extensions/external_policy_loader_unittest.cc
+++ b/chrome/browser/extensions/external_policy_loader_unittest.cc
@@ -13,11 +13,11 @@
 #include "chrome/browser/extensions/external_provider_impl.h"
 #include "chrome/browser/extensions/external_provider_interface.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_pref_service_syncable.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
+#include "extensions/common/manifest.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
diff --git a/chrome/browser/extensions/external_provider_impl.cc b/chrome/browser/extensions/external_provider_impl.cc
index 41d064a..811adc2 100644
--- a/chrome/browser/extensions/external_provider_impl.cc
+++ b/chrome/browser/extensions/external_provider_impl.cc
@@ -28,9 +28,9 @@
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
+#include "extensions/common/manifest.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_CHROMEOS)
diff --git a/chrome/browser/extensions/external_provider_impl.h b/chrome/browser/extensions/external_provider_impl.h
index ef6a890..8375826 100644
--- a/chrome/browser/extensions/external_provider_impl.h
+++ b/chrome/browser/extensions/external_provider_impl.h
@@ -11,7 +11,7 @@
 
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/extensions/external_loader.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 
 class Profile;
 
diff --git a/chrome/browser/extensions/external_provider_interface.h b/chrome/browser/extensions/external_provider_interface.h
index d82e0b1..e99cd61d0 100644
--- a/chrome/browser/extensions/external_provider_interface.h
+++ b/chrome/browser/extensions/external_provider_interface.h
@@ -8,7 +8,7 @@
 #include <vector>
 
 #include "base/memory/linked_ptr.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 
 class GURL;
 
diff --git a/chrome/browser/extensions/image_loader_unittest.cc b/chrome/browser/extensions/image_loader_unittest.cc
index 8c541a6..05cea06 100644
--- a/chrome/browser/extensions/image_loader_unittest.cc
+++ b/chrome/browser/extensions/image_loader_unittest.cc
@@ -12,11 +12,11 @@
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_icon_set.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/manifest_handlers/icons_handler.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_browser_thread.h"
 #include "extensions/common/extension_resource.h"
+#include "extensions/common/manifest.h"
 #include "grit/component_extension_resources.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
diff --git a/chrome/browser/extensions/installed_loader.cc b/chrome/browser/extensions/installed_loader.cc
index f7ee634..7b02fba 100644
--- a/chrome/browser/extensions/installed_loader.cc
+++ b/chrome/browser/extensions/installed_loader.cc
@@ -25,11 +25,11 @@
 #include "chrome/common/extensions/extension_file_util.h"
 #include "chrome/common/extensions/extension_l10n_util.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/user_metrics.h"
+#include "extensions/common/manifest.h"
 
 using content::BrowserThread;
 using content::UserMetricsAction;
diff --git a/chrome/browser/extensions/pending_extension_info.h b/chrome/browser/extensions/pending_extension_info.h
index dbcf1bd..fbd46667 100644
--- a/chrome/browser/extensions/pending_extension_info.h
+++ b/chrome/browser/extensions/pending_extension_info.h
@@ -9,7 +9,7 @@
 
 #include "base/version.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 #include "url/gurl.h"
 
 FORWARD_DECLARE_TEST(ExtensionServiceTest, AddPendingExtensionFromSync);
diff --git a/chrome/browser/extensions/pending_extension_manager.h b/chrome/browser/extensions/pending_extension_manager.h
index 41bf30ca..a8f02702 100644
--- a/chrome/browser/extensions/pending_extension_manager.h
+++ b/chrome/browser/extensions/pending_extension_manager.h
@@ -10,7 +10,7 @@
 
 #include "chrome/browser/extensions/pending_extension_info.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 
 class ExtensionServiceInterface;
 class GURL;
diff --git a/chrome/browser/extensions/requirements_checker.cc b/chrome/browser/extensions/requirements_checker.cc
index 1acc782..d2a3f82 100644
--- a/chrome/browser/extensions/requirements_checker.cc
+++ b/chrome/browser/extensions/requirements_checker.cc
@@ -7,11 +7,11 @@
 #include "base/bind.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/gpu/gpu_feature_checker.h"
-#include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
+#include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest_handlers/requirements_handler.h"
 #include "content/public/browser/browser_thread.h"
+#include "extensions/common/manifest.h"
 #include "gpu/config/gpu_feature_type.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
diff --git a/chrome/browser/extensions/sandboxed_unpacker.h b/chrome/browser/extensions/sandboxed_unpacker.h
index 07031da9..6f4075f 100644
--- a/chrome/browser/extensions/sandboxed_unpacker.h
+++ b/chrome/browser/extensions/sandboxed_unpacker.h
@@ -11,8 +11,8 @@
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
-#include "chrome/common/extensions/manifest.h"
 #include "content/public/browser/utility_process_host_client.h"
+#include "extensions/common/manifest.h"
 
 class SkBitmap;
 
diff --git a/chrome/browser/extensions/test_extension_prefs.h b/chrome/browser/extensions/test_extension_prefs.h
index 356bc03..6232089 100644
--- a/chrome/browser/extensions/test_extension_prefs.h
+++ b/chrome/browser/extensions/test_extension_prefs.h
@@ -10,7 +10,7 @@
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
-#include "chrome/common/extensions/manifest.h"
+#include "extensions/common/manifest.h"
 
 class ExtensionPrefValueMap;
 class PrefService;
diff --git a/chrome/browser/extensions/unpacked_installer.cc b/chrome/browser/extensions/unpacked_installer.cc
index a83d56a..b36afaa4 100644
--- a/chrome/browser/extensions/unpacked_installer.cc
+++ b/chrome/browser/extensions/unpacked_installer.cc
@@ -18,9 +18,9 @@
 #include "chrome/common/extensions/api/plugins/plugins_handler.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_file_util.h"
-#include "chrome/common/extensions/manifest.h"
 #include "content/public/browser/browser_thread.h"
 #include "extensions/common/id_util.h"
+#include "extensions/common/manifest.h"
 #include "sync/api/string_ordinal.h"
 
 using content::BrowserThread;
diff --git a/chrome/browser/extensions/updater/extension_updater.cc b/chrome/browser/extensions/updater/extension_updater.cc
index b66f548..6b9cece 100644
--- a/chrome/browser/extensions/updater/extension_updater.cc
+++ b/chrome/browser/extensions/updater/extension_updater.cc
@@ -26,13 +26,13 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_set.h"
-#include "chrome/common/extensions/manifest.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "crypto/sha2.h"
+#include "extensions/common/manifest.h"
 
 using base::RandDouble;
 using base::RandInt;