Allow CanvasSkia to bind to an existing SkCanvas.

chrome/browser/ui/views/frame/opaque_browser_frame_view.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/ui/views/frame/opaque_browser_frame_view.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 784 matching lines @@
   int bottom_y = y + split_point;
   ui::ThemeProvider* tp = GetThemeProvider();
   SkBitmap* toolbar_left = tp->GetBitmapNamed(IDR_CONTENT_TOP_LEFT_CORNER);
   int bottom_edge_height = std::min(toolbar_left->height(), h) - split_point;
 
   // Split our canvas out so we can mask out the corners of the toolbar
   // without masking out the frame.
   canvas->SaveLayerAlpha(
       255, gfx::Rect(x - kClientEdgeThickness, y, w + kClientEdgeThickness * 3,
                      h));
-  canvas->AsCanvasSkia()->drawARGB(0, 255, 255, 255, SkXfermode::kClear_Mode);
+  canvas->GetSkCanvas()->drawARGB(0, 255, 255, 255, SkXfermode::kClear_Mode);
 
   SkColor theme_toolbar_color =
       tp->GetColor(ThemeService::COLOR_TOOLBAR);
   canvas->FillRectInt(theme_toolbar_color, x, bottom_y, w, bottom_edge_height);
 
   // Tile the toolbar image starting at the frame edge on the left and where the
   // horizontal tabstrip is (or would be) on the top.
   SkBitmap* theme_toolbar = tp->GetBitmapNamed(IDR_THEME_TOOLBAR);
   canvas->TileImageInt(*theme_toolbar, x,
                        bottom_y - GetHorizontalTabStripVerticalOffset(false), x,
@@ skipping 354 matching lines @@
         g_browser_process->profile_manager()->GetProfileInfoCache();
     Profile* profile = browser_view_->browser()->profile();
     size_t index = cache.GetIndexOfProfileWithPath(profile->GetPath());
     if (index != std::string::npos) {
       avatar_button_->SetIcon(cache.GetAvatarIconOfProfileAtIndex(index));
       avatar_button_->SetText(UTF16ToWideHack(
           cache.GetNameOfProfileAtIndex(index)));
     }
   }
 }