Adds functionality to anchor widgets to the top-of-window views in immersive mode

chrome/browser/ui/views/frame/immersive_mode_controller_stub.h

 // Copyright 2013 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_IMMERSIVE_MODE_CONTROLLER_STUB_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_STUB_H_
 
 #include "chrome/browser/ui/views/frame/immersive_mode_controller.h"
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 
 // Stub implementation of ImmersiveModeController for platforms which do not
 // support immersive mode yet.
 class ImmersiveModeControllerStub : public ImmersiveModeController {
  public:
   ImmersiveModeControllerStub();
   virtual ~ImmersiveModeControllerStub();
 
   // ImmersiveModeController overrides:
   virtual void Init(BrowserView* browser_view) OVERRIDE;
   virtual void SetEnabled(bool enabled) OVERRIDE;
   virtual bool IsEnabled() const OVERRIDE;
   virtual bool ShouldHideTabIndicators() const OVERRIDE;
   virtual bool ShouldHideTopViews() const OVERRIDE;
   virtual bool IsRevealed() const OVERRIDE;
   virtual void MaybeStackViewAtTop() OVERRIDE;
   virtual ImmersiveModeController::RevealedLock*
       GetRevealedLock() OVERRIDE WARN_UNUSED_RESULT;
+  virtual void AnchorWidgetToTopContainer(views::Widget* widget,
+                                          int y_offset) OVERRIDE;
+  virtual void UnanchorWidgetFromTopContainer(views::Widget* widget) OVERRIDE;
+  virtual void OnTopContainerBoundsChanged() OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ImmersiveModeControllerStub);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_IMMERSIVE_MODE_CONTROLLER_STUB_H_