[cros] disable GDrive option on certain file pickers

chrome/browser/ui/views/select_file_dialog_extension.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_SELECT_FILE_DIALOG_EXTENSION_H_
 #define CHROME_BROWSER_UI_VIEWS_SELECT_FILE_DIALOG_EXTENSION_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 49 matching lines @@
   // SelectFileDialog implementation.
   virtual void SelectFileImpl(Type type,
                               const string16& title,
                               const FilePath& default_path,
                               const FileTypeInfo* file_types,
                               int file_type_index,
                               const FilePath::StringType& default_extension,
                               gfx::NativeWindow owning_window,
                               void* params) OVERRIDE;
 
-
  private:
   friend class SelectFileDialogExtensionBrowserTest;
   friend class SelectFileDialogExtensionTest;
 
   // Object is ref-counted, use Create().
   explicit SelectFileDialogExtension(SelectFileDialog::Listener* listener,
                                      ui::SelectFilePolicy* policy);
   virtual ~SelectFileDialogExtension();
 
   // Invokes the appropriate file selection callback on our listener.
@@ skipping 32 matching lines @@
   };
   SelectionType selection_type_;
   std::vector<ui::SelectedFileInfo> selection_files_;
   int selection_index_;
   void* params_;
 
   DISALLOW_COPY_AND_ASSIGN(SelectFileDialogExtension);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_SELECT_FILE_DIALOG_EXTENSION_H_