Fix extension toolstrip background update code

chrome/browser/views/extensions/extension_shelf.h

 // Copyright (c) 2009 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_VIEWS_EXTENSIONS_EXTENSION_SHELF_H_
 #define CHROME_BROWSER_VIEWS_EXTENSIONS_EXTENSION_SHELF_H_
 
 #include "app/gfx/canvas.h"
 #include "app/slide_animation.h"
 #include "base/task.h"
@@ skipping 81 matching lines @@
   void DropExtension(Toolstrip* handle, const gfx::Point& pt, bool cancel);
 
   // Expand the specified toolstrip, navigating to |url| if non-empty,
   // and setting the |height|.
   void ExpandToolstrip(ExtensionHost* host, const GURL& url, int height);
 
   // Collapse the specified toolstrip, navigating to |url| if non-empty.
   void CollapseToolstrip(ExtensionHost* host, const GURL& url);
 
   // Initializes the background bitmaps for all views.
-  void InitBackground(gfx::Canvas* canvas, const SkRect& subset);
+  void InitBackground(gfx::Canvas* canvas);
 
   // Returns the Toolstrip at |x| coordinate.  If |x| is out of bounds, returns
   // NULL.
   Toolstrip* ToolstripAtX(int x);
 
   // Returns the Toolstrip at |index|.
   Toolstrip* ToolstripAtIndex(int index);
 
   // Returns the toolstrip associated with |view|.
   Toolstrip* ToolstripForView(ExtensionView* view);
@@ skipping 12 matching lines @@
 
   // Returns whether the extension shelf is being displayed over the new tab
   // page.
   bool OnNewTabPage() const;
 
   NotificationRegistrar registrar_;
 
   // Background bitmap to draw under extension views.
   bool background_needs_repaint_;
 
-  // Whether the background we are remembering is for detached mode or not.
-  // This allows us to switch backgrounds and remember if we've done so, so that
-  // we don't have to do it over and over again.
-  bool background_for_detached_;
-
   // The browser this extension shelf belongs to.
   Browser* browser_;
 
   // The model representing the toolstrips on the shelf.
   ExtensionShelfModel* model_;
 
   // Storage of strings needed for accessibility.
   std::wstring accessible_name_;
 
   // Animation controlling showing and hiding of the shelf.
   scoped_ptr<SlideAnimation> size_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionShelf);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_EXTENSIONS_EXTENSION_SHELF_H_