Returning sourcePath from chrome.fileBrowserPrivate.addMount for gdata.

BUG=141807
TEST=Navigate to a folder in Google Drive in the File Manager. Press Ctrl+R. Ensure file the list is correct (before the fix it used to contain Google Drive root directory content). Also checked the behavior described in the issue.


Review URL: https://chromiumcodereview.appspot.com/10826260

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@151250 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/extensions/file_browser_private_api.cc

@@ -1087,6 +1087,10 @@ bool AddMountFunction::RunImpl() {
     }
     case chromeos::MOUNT_TYPE_GDATA: {
       const bool success = true;
+      // Pass back the gdata mount point path as source path.
+      const std::string& gdata_path =
+          gdata::util::GetGDataMountPointPathAsString();
+      SetResult(Value::CreateStringValue(gdata_path));
       FileBrowserEventRouterFactory::GetForProfile(profile_)->
           MountDrive(base::Bind(&AddMountFunction::SendResponse,
                                 this,