Create new histograms (with "2" suffix) corresponding to histograms using the "ExtensionPermission" enum.

Also, update the histograms owners and mark the old histograms as obsolete.

BUG=338008

Review URL: https://codereview.chromium.org/274943003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@274728 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 57818511..41acccf 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -742,7 +742,7 @@
   UMA_HISTOGRAM_ENUMERATION("Extensions.UninstallType",
                             extension->GetType(), 100);
   RecordPermissionMessagesHistogram(extension.get(),
-                                    "Extensions.Permissions_Uninstall");
+                                    "Extensions.Permissions_Uninstall2");
 
   // Unload before doing more cleanup to ensure that nothing is hanging on to
   // any of these resources.
@@ -956,8 +956,8 @@
 void ExtensionService::GrantPermissionsAndEnableExtension(
     const Extension* extension) {
   GrantPermissions(extension);
-  RecordPermissionMessagesHistogram(
-      extension, "Extensions.Permissions_ReEnable");
+  RecordPermissionMessagesHistogram(extension,
+                                    "Extensions.Permissions_ReEnable2");
   extension_prefs_->SetDidExtensionEscalatePermissions(extension, false);
   EnableExtension(extension->id());
 }
@@ -1709,8 +1709,8 @@
   } else if (is_privilege_increase) {
     disable_reasons |= Extension::DISABLE_PERMISSIONS_INCREASE;
     if (!extension_prefs_->DidExtensionEscalatePermissions(extension->id())) {
-      RecordPermissionMessagesHistogram(
-          extension, "Extensions.Permissions_AutoDisable");
+      RecordPermissionMessagesHistogram(extension,
+                                        "Extensions.Permissions_AutoDisable2");
     }
     extension_prefs_->SetExtensionState(extension->id(), Extension::DISABLED);
     extension_prefs_->SetDidExtensionEscalatePermissions(extension, true);
@@ -1815,8 +1815,8 @@
                               extension->GetType(), 100);
     UMA_HISTOGRAM_ENUMERATION("Extensions.InstallSource",
                               extension->location(), Manifest::NUM_LOCATIONS);
-    RecordPermissionMessagesHistogram(
-        extension, "Extensions.Permissions_Install");
+    RecordPermissionMessagesHistogram(extension,
+                                      "Extensions.Permissions_Install2");
   } else {
     UMA_HISTOGRAM_ENUMERATION("Extensions.UpdateType",
                               extension->GetType(), 100);