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

chrome/browser/chromeos/login/ui/login_display_host_impl.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_LOGIN_DISPLAY_HOST_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOGIN_DISPLAY_HOST_IMPL_H_
 
 #include <string>
 #include <vector>
 
 #include "ash/shell_delegate.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/login/app_launch_controller.h"
 #include "chrome/browser/chromeos/login/auth/auth_prewarmer.h"
 #include "chrome/browser/chromeos/login/existing_user_controller.h"
 #include "chrome/browser/chromeos/login/ui/login_display.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/chromeos/settings/device_settings_service.h"
 #include "chromeos/audio/cras_audio_handler.h"
 #include "chromeos/dbus/session_manager_client.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
+#include "ui/gfx/display_observer.h"
 #include "ui/gfx/rect.h"
 #include "ui/keyboard/keyboard_controller_observer.h"
 
 class PrefService;
 
 namespace content {
 class RenderFrameHost;
 class WebContents;
 }
 
 namespace chromeos {
 
 class DemoAppLauncher;
 class FocusRingController;
 class KeyboardDrivenOobeKeyHandler;
 class OobeUI;
 class WebUILoginDisplay;
 class WebUILoginView;
 
 // An implementation class for OOBE/login WebUI screen host.
 // It encapsulates controllers, background integration and flow.
 class LoginDisplayHostImpl : public LoginDisplayHost,
                              public content::NotificationObserver,
                              public content::WebContentsObserver,
                              public chromeos::SessionManagerClient::Observer,
                              public chromeos::CrasAudioHandler::AudioObserver,
                              public ash::VirtualKeyboardStateObserver,
-                             public keyboard::KeyboardControllerObserver {
+                             public keyboard::KeyboardControllerObserver,
+                             public gfx::DisplayObserver {
  public:
   explicit LoginDisplayHostImpl(const gfx::Rect& background_bounds);
   virtual ~LoginDisplayHostImpl();
 
   // Returns the default LoginDisplayHost instance if it has been created.
   static LoginDisplayHost* default_host() {
     return default_host_;
   }
 
   // Gets the Gaia auth iframe within a WebContents.
@@ skipping 57 matching lines @@
 
   // Overridden from chromeos::CrasAudioHandler::AudioObserver:
   virtual void OnActiveOutputNodeChanged() OVERRIDE;
 
   // Overridden from ash::KeyboardStateObserver:
   virtual void OnVirtualKeyboardStateChanged(bool activated) OVERRIDE;
 
   // Overridden from keyboard::KeyboardControllerObserver:
   virtual void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) OVERRIDE;
 
+  // Overridden from gfx::DisplayObserver:
+  virtual void OnDisplayAdded(const gfx::Display& new_display) OVERRIDE;
+  virtual void OnDisplayRemoved(const gfx::Display& old_display) OVERRIDE;
+  virtual void OnDisplayMetricsChanged(const gfx::Display& display,
+                                       uint32_t changed_metrics) OVERRIDE;
+
  private:
   // Way to restore if renderer have crashed.
   enum RestorePath {
     RESTORE_UNKNOWN,
     RESTORE_WIZARD,
     RESTORE_SIGN_IN,
     RESTORE_ADD_USER_INTO_SESSION,
   };
 
   // Type of animations to run after the login screen.
@@ skipping 166 matching lines @@
 
   // The bounds of the virtual keyboard.
   gfx::Rect keyboard_bounds_;
 
   DISALLOW_COPY_AND_ASSIGN(LoginDisplayHostImpl);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_LOGIN_DISPLAY_HOST_IMPL_H_