The Apps ntp page should not display an avatar menu when clicking on the username.

chrome/browser/ui/views/frame/browser_view.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_FRAME_BROWSER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 341 matching lines @@
   void HandleKeyboardEvent(
       const content::NativeWebKeyboardEvent& event) override;
   void Cut() override;
   void Copy() override;
   void Paste() override;
   WindowOpenDisposition GetDispositionForPopupBounds(
       const gfx::Rect& bounds) override;
   FindBar* CreateFindBar() override;
   web_modal::WebContentsModalDialogHost* GetWebContentsModalDialogHost()
       override;
-  void ShowAvatarBubble(content::WebContents* web_contents,
-                        const gfx::Rect& rect) override;
   void ShowAvatarBubbleFromAvatarButton(
       AvatarBubbleMode mode,
       const signin::ManageAccountsParams& manage_accounts_params) override;
   int GetRenderViewHeightInsetWithDetachedBookmarkBar() override;
   void ExecuteExtensionCommand(const extensions::Extension* extension,
                                const extensions::Command& command) override;
 
   // Overridden from BrowserWindowTesting:
   BookmarkBarView* GetBookmarkBarView() const override;
   LocationBarView* GetLocationBarView() const override;
@@ skipping 331 matching lines @@
   scoped_ptr<ImmersiveModeController> immersive_mode_controller_;
 
   scoped_ptr<WebContentsCloseHandler> web_contents_close_handler_;
 
   mutable base::WeakPtrFactory<BrowserView> activate_modal_dialog_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_