Clean up frame code a bit:

chrome/browser/ui/views/frame/opaque_browser_frame_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_OPAQUE_BROWSER_FRAME_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/ui/view_ids.h"
@@ skipping 122 matching lines @@
   // Returns the bounds of the titlebar icon (or where the icon would be if
   // there was one).
   gfx::Rect IconBounds() const;
 
   // Returns true if the view should draw its own custom title bar.
   bool ShouldShowWindowTitleBar() const;
 
   // Paint various sub-components of this view.  The *FrameBorder() functions
   // also paint the background of the titlebar area, since the top frame border
   // and titlebar background are a contiguous component.
-  void PaintRestoredFrameBorder(gfx::Canvas* canvas);
-  void PaintMaximizedFrameBorder(gfx::Canvas* canvas);
-  void PaintToolbarBackground(gfx::Canvas* canvas);
-  void PaintClientEdge(gfx::Canvas* canvas);
+  void PaintRestoredFrameBorder(gfx::Canvas* canvas) const;
+  void PaintMaximizedFrameBorder(gfx::Canvas* canvas) const;
+  void PaintToolbarBackground(gfx::Canvas* canvas) const;
+  void PaintClientEdge(gfx::Canvas* canvas) const;
   void FillClientEdgeRects(int x,
                            int y,
                            int right,
                            int bottom,
                            SkColor color,
                            gfx::Canvas* canvas) const;
 
   // Our layout manager also calculates various bounds.
   OpaqueBrowserFrameViewLayout* layout_;
 
@@ skipping 10 matching lines @@
   // Background painter for the window frame.
   scoped_ptr<views::FrameBackground> frame_background_;
 
   // Observer that handles platform dependent configuration.
   scoped_ptr<OpaqueBrowserFrameViewPlatformSpecific> platform_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(OpaqueBrowserFrameView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_H_