Add 1st cut of IPC plumbing code for FileSystem API's openFileSystem

The dispatcher host code is just a stub.

BUG=32277
TESTS=none; will be added later

Review URL: http://codereview.chromium.org/3107026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@56984 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 93feece..23bd6ed 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -1459,6 +1459,8 @@
         'browser/file_path_watcher_inotify.cc',
         'browser/file_path_watcher_mac.cc',
         'browser/file_path_watcher_win.cc',
+        'browser/file_system/file_system_dispatcher_host.cc',
+        'browser/file_system/file_system_dispatcher_host.h',
         'browser/find_bar.h',
         'browser/find_bar_controller.cc',
         'browser/find_bar_controller.h',