views: Extract Widget observer into its own header file.

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 10 matching lines @@
 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
 #include "chrome/browser/ui/views/frame/browser_frame.h"
 #include "chrome/browser/ui/views/unhandled_keyboard_event_handler.h"
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/base/models/simple_menu_model.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/sys_color_change_listener.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/single_split_view_listener.h"
 #include "ui/views/widget/widget_delegate.h"
+#include "ui/views/widget/widget_observer.h"
 #include "ui/views/window/client_view.h"
 
 #if defined(OS_WIN)
 #include "chrome/browser/hang_monitor/hung_plugin_action.h"
 #include "chrome/browser/hang_monitor/hung_window_detector.h"
 #endif
 
 // NOTE: For more information about the objects and files in this directory,
 // view: http://dev.chromium.org/developers/design-documents/browser-window
 
@@ skipping 41 matching lines @@
 // BrowserView
 //
 //  A ClientView subclass that provides the contents of a browser window,
 //  including the TabStrip, toolbars, download shelves, the content area etc.
 //
 class BrowserView : public BrowserWindow,
                     public BrowserWindowTesting,
                     public TabStripModelObserver,
                     public ui::AcceleratorProvider,
                     public views::WidgetDelegate,
-                    public views::Widget::Observer,
+                    public views::WidgetObserver,
                     public views::ClientView,
                     public InfoBarContainer::Delegate,
                     public views::SingleSplitViewListener,
                     public gfx::SysColorChangeListener,
                     public MetroPinnedStateObserver {
  public:
   // The browser view's class name.
   static const char kViewClassName[];
 
   explicit BrowserView(Browser* browser);
@@ skipping 288 matching lines @@
   virtual bool GetSavedWindowPlacement(
       gfx::Rect* bounds,
       ui::WindowShowState* show_state) const OVERRIDE;
   virtual views::View* GetContentsView() OVERRIDE;
   virtual views::ClientView* CreateClientView(views::Widget* widget) OVERRIDE;
   virtual void OnWindowBeginUserBoundsChange() OVERRIDE;
   virtual void OnWidgetMove() OVERRIDE;
   virtual views::Widget* GetWidget() OVERRIDE;
   virtual const views::Widget* GetWidget() const OVERRIDE;
 
-  // Overridden from views::Widget::Observer
+  // Overridden from views::WidgetObserver:
   virtual void OnWidgetActivationChanged(views::Widget* widget,
                                          bool active) OVERRIDE;
 
   // Overridden from views::ClientView:
   virtual bool CanClose() OVERRIDE;
   virtual int NonClientHitTest(const gfx::Point& point) OVERRIDE;
   virtual gfx::Size GetMinimumSize() OVERRIDE;
 
   // InfoBarContainer::Delegate overrides
   virtual SkColor GetInfoBarSeparatorColor() const OVERRIDE;
@@ skipping 308 matching lines @@
   gfx::ScopedSysColorChangeListener color_change_listener_;
 
 #if defined(USE_AURA)
   scoped_ptr<SearchViewController> search_view_controller_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(BrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_