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

chrome/browser/ui/views/frame/top_container_view.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_TOP_CONTAINER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_TOP_CONTAINER_VIEW_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ui/views/view.h"
 
 class BrowserView;
 
 // Container for the BrowserView's tab strip, toolbar, and sometimes bookmark
 // bar. In Chrome OS immersive fullscreen it stacks on top of other views in
 // order to slide in and out over the web contents. It informs the immersive
 // mode controller when its children lose focus to trigger a slide out.
 class TopContainerView : public views::View {
  public:
   explicit TopContainerView(BrowserView* browser_view);
   virtual ~TopContainerView();
 
+  // If the view is animating its bounds, returns the target bounds. Otheriwse,
+  // returns the view's bounds.
+  // TODO(pkotwicz): Investigate if GetBoundsInScreen() can return the view's
+  // target bounds.
+  gfx::Rect GetTargetBoundsInScreen() const;
+
   // views::View overrides:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual std::string GetClassName() const OVERRIDE;
+  virtual void OnBoundsChanged(const gfx::Rect& bounds) OVERRIDE;
   virtual void PaintChildren(gfx::Canvas* canvas) OVERRIDE;
 
  private:
   // The parent of this view. Not owned.
   BrowserView* browser_view_;
 
   DISALLOW_COPY_AND_ASSIGN(TopContainerView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_TOP_CONTAINER_VIEW_H_