Drive: Mount/Unmount GoogleDrive on Files App when the file system is mounted/unmounted.

chrome/browser/chromeos/extensions/file_browser_private_api.h

Index: chrome/browser/chromeos/extensions/file_browser_private_api.h
diff --git a/chrome/browser/chromeos/extensions/file_browser_private_api.h b/chrome/browser/chromeos/extensions/file_browser_private_api.h
index 9b175fdd009d5cd3ae27ae8abe022b5b58e9dfb2..d86aace929cc71f4c1908f408a176f7a621c88fe 100644
--- a/chrome/browser/chromeos/extensions/file_browser_private_api.h
+++ b/chrome/browser/chromeos/extensions/file_browser_private_api.h
@@ -276,11 +276,6 @@ class AddMountFunction : public FileBrowserFunction {
   virtual bool RunImpl() OVERRIDE;
 
  private:
-  // Sends gdata mount event to renderers.
-  void RaiseGDataMountEvent(gdata::GDataErrorCode error);
-  // A callback method to handle the result of GData authentication request.
-  void OnGDataAuthentication(gdata::GDataErrorCode error,
-                             const std::string& token);
   // A callback method to handle the result of
   // GetLocalPathsOnFileThreadAndRunCallbackOnUIThread.
   void GetLocalPathsResponseOnUIThread(const std::string& mount_type_str,
@@ -290,6 +285,8 @@ class AddMountFunction : public FileBrowserFunction {
                          const FilePath::StringType& file_name,
                          gdata::GDataFileError error,
                          const FilePath& file_path);
+
+  base::WeakPtrFactory<AddMountFunction> weak_ptr_factory_;
 };
 
 // Unmounts selected device. Expects mount point path as an argument.