Disable VK overscroll for login/out-of-box.

chrome/browser/chromeos/login/ui/webui_login_display.h

 // Copyright 2014 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_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_DISPLAY_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_DISPLAY_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 31 matching lines @@
   virtual void SetUIEnabled(bool is_enabled) OVERRIDE;
   virtual void SelectPod(int index) OVERRIDE;
   virtual void ShowError(int error_msg_id,
                          int login_attempts,
                          HelpAppLauncher::HelpTopic help_topic_id) OVERRIDE;
   virtual void ShowErrorScreen(LoginDisplay::SigninError error_id) OVERRIDE;
   virtual void ShowGaiaPasswordChanged(const std::string& username) OVERRIDE;
   virtual void ShowPasswordChangedDialog(bool show_password_error) OVERRIDE;
   virtual void ShowSigninUI(const std::string& email) OVERRIDE;
   virtual void ShowControlBar(bool show) OVERRIDE;
+  virtual void SetKeyboardState(bool shown) OVERRIDE;
 
   // NativeWindowDelegate implementation:
   virtual gfx::NativeWindow GetNativeWindow() const OVERRIDE;
 
   // SigninScreenHandlerDelegate implementation:
   virtual void CancelPasswordChangedFlow() OVERRIDE;
   virtual void CancelUserAdding() OVERRIDE;
   virtual void CreateAccount() OVERRIDE;
   virtual void CompleteLogin(const UserContext& user_context) OVERRIDE;
   virtual void Login(const UserContext& user_context) OVERRIDE;
@@ skipping 50 matching lines @@
 
   // Reference to the WebUI handling layer for the login screen
   LoginDisplayWebUIHandler* webui_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUILoginDisplay);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_DISPLAY_H_