About flag support for use-leveldb-for-gdata

BUG=127856
TEST=manual
Review URL: https://chromiumcodereview.appspot.com/10830178

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@150157 0039d316-1c4b-4281-b951-d872f2087c98

chrome/app/generated_resources.grd

@@ -5934,6 +5934,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
         <message name="IDS_FLAGS_ENABLE_DRIVE_V2_API_DESCRIPTION" desc="Description for the flag to enable Drive V2 API.">
           Enables to use Drive V2 API for accessing Google Drive folder.
         </message>
+        <message name="IDS_FLAGS_USE_LEVELDB_FOR_GDATA_NAME" desc="Name for the flag to use level db for drive metadata storage.">
+          Use level db for drive metadata storage.
+        </message>
+        <message name="IDS_FLAGS_USE_LEVELDB_FOR_GDATA_DESCRIPTION" desc="Description for the flag to to use level db for drive metadata storage.">
+          Use level db for drive metadata storage instead of proto file.
+        </message>
         <message name="IDS_FLAGS_DISABLE_HTML5_CAMERA" desc="Name for the flag to disable new camera WebUI.">
           Disable HTML5 camera in WebUI.
         </message>
@@ -5945,7 +5951,7 @@ Keep your key file in a safe place. You will need it to create new versions of y
         </message>
         <message name="IDS_FLAGS_DISABLE_NEW_OOBE_DESCRIPTION" desc="Description for the flag to disable new design for OOBE / sign in flows.">
           Disables new design for OOBE / sign in flows.
-        </message>
+        </message>        
         <message name="IDS_FLAGS_DISABLE_BOOT_ANIMATION" desc="Name for the flag to disable wallpaper boot animation (except for OOBE).">
           Disable boot animation.
         </message>

chrome/browser/about_flags.cc

@@ -810,6 +810,13 @@ const Experiment kExperiments[] = {
     kOsCrOS,
     SINGLE_VALUE_TYPE(switches::kEnableDriveV2Api),
   },
+  {
+    "use-leveldb-for-gdata",
+    IDS_FLAGS_USE_LEVELDB_FOR_GDATA_NAME,
+    IDS_FLAGS_USE_LEVELDB_FOR_GDATA_DESCRIPTION,
+    kOsCrOS,
+    SINGLE_VALUE_TYPE(switches::kUseLevelDBForGData),
+  },
   {
     "disable-html5-camera",
     IDS_FLAGS_DISABLE_HTML5_CAMERA,