Eliminate skia::PlatformCanvas - Step 1

skia/ext/platform_device_win.h

 // Copyright (c) 2006-2008 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 SKIA_EXT_PLATFORM_DEVICE_WIN_H_
 #define SKIA_EXT_PLATFORM_DEVICE_WIN_H_
 #pragma once
 
 #include <windows.h>
 
@@ skipping 30 matching lines @@
 
   // Sets the opacity of each pixel in the specified region to be opaque.
   virtual void makeOpaque(int x, int y, int width, int height) { }
 
   // Returns if the preferred rendering engine is vectorial or bitmap based.
   virtual bool IsVectorial() = 0;
 
   // Returns if GDI is allowed to render text to this device.
   virtual bool IsNativeFontRenderingAllowed() { return true; }
 
+  virtual PlatformSurface beginPlatformPaint();
+  virtual void endPlatformPaint();
+
   // Initializes the default settings and colors in a device context.
   static void InitializeDC(HDC context);
 
   // Loads a SkPath into the GDI context. The path can there after be used for
   // clipping or as a stroke.
   static void LoadPathToDC(HDC context, const SkPath& path);
 
   // Loads a SkRegion into the GDI context.
   static void LoadClippingRegionToDC(HDC context, const SkRegion& region,
                                      const SkMatrix& transformation);
@@ skipping 14 matching lines @@
   static void LoadTransformToDC(HDC dc, const SkMatrix& matrix);
 
   // Transforms SkPath's paths into a series of cubic path.
   static bool SkPathToCubicPaths(CubicPaths* paths, const SkPath& skpath);
 };
 
 }  // namespace skia
 
 #endif  // SKIA_EXT_PLATFORM_DEVICE_WIN_H_