Allow CanvasSkia to bind to an existing SkCanvas.

content/browser/renderer_host/render_widget_host_view_win.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 "content/browser/renderer_host/render_widget_host_view_win.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/i18n/rtl.h"
@@ skipping 144 matching lines @@
 }
 
 // Draw the contents of |backing_store_dc| onto |paint_rect| with a 70% grey
 // filter.
 void DrawDeemphasized(const SkColor& color,
                       const gfx::Rect& paint_rect,
                       HDC backing_store_dc,
                       HDC paint_dc) {
   gfx::CanvasSkia canvas(paint_rect.width(), paint_rect.height(), true);
   {
-    skia::ScopedPlatformPaint scoped_platform_paint(&canvas);
+    skia::ScopedPlatformPaint scoped_platform_paint(canvas.sk_canvas());
     HDC dc = scoped_platform_paint.GetPlatformSurface();
     BitBlt(dc,
            0,
            0,
            paint_rect.width(),
            paint_rect.height(),
            backing_store_dc,
            paint_rect.x(),
            paint_rect.y(),
            SRCCOPY);
   }
   canvas.FillRectInt(color, 0, 0, paint_rect.width(), paint_rect.height());
-  skia::DrawToNativeContext(&canvas, paint_dc, paint_rect.x(),
+  skia::DrawToNativeContext(canvas.sk_canvas(), paint_dc, paint_rect.x(),
                             paint_rect.y(), NULL);
 }
 
 // The plugin wrapper window which lives in the browser process has this proc
 // as its window procedure. We only handle the WM_PARENTNOTIFY message sent by
 // windowed plugins for mouse input. This is forwarded off to the wrappers
 // parent which is typically the RVH window which turns on user gesture.
 LRESULT CALLBACK PluginWrapperWindowProc(HWND window, unsigned int message,
                                          WPARAM wparam, LPARAM lparam) {
   if (message == WM_PARENTNOTIFY) {
@@ skipping 770 matching lines @@
     gfx::CanvasSkia canvas(dirty_rect.right - dirty_rect.left,
                            dirty_rect.bottom - dirty_rect.top,
                            true);  // opaque
     canvas.TranslateInt(-dirty_rect.left, -dirty_rect.top);
 
     const RECT& dc_rect = dc->m_ps.rcPaint;
     canvas.TileImageInt(background_, 0, 0,
                         dc_rect.right - dc_rect.left,
                         dc_rect.bottom - dc_rect.top);
 
-    skia::DrawToNativeContext(&canvas, *dc, dirty_rect.left, dirty_rect.top,
-                              NULL);
+    skia::DrawToNativeContext(canvas.sk_canvas(), *dc, dirty_rect.left,
+                              dirty_rect.top, NULL);
   } else {
     HBRUSH white_brush = reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH));
     dc->FillRect(&dirty_rect, white_brush);
   }
 }
 
 void RenderWidgetHostViewWin::OnNCPaint(HRGN update_region) {
   // Do nothing.  This suppresses the resize corner that Windows would
   // otherwise draw for us.
 }
@@ skipping 960 matching lines @@
   if (message == WM_MOUSEMOVE) {
     CPoint center = GetClientCenter();
     // Ignore WM_MOUSEMOVE messages generated by MoveCursorToCenter().
     if (LOWORD(lparam) == center.x && HIWORD(lparam) == center.y)
       return;
   }
 
   ForwardMouseEventToRenderer(message, wparam, lparam);
 }