rename getBitmapDC to beginPlatformPaint and add calls to endPlatformPaint

skia/ext/bitmap_platform_device_win.h

Index: skia/ext/bitmap_platform_device_win.h
diff --git a/skia/ext/bitmap_platform_device_win.h b/skia/ext/bitmap_platform_device_win.h
index 87a2e1d0a614e0b5a1c59cc9712fb6f32e6cbd34..6d5805fd7ee2185f5f7953e2863b83d973953530 100644
--- a/skia/ext/bitmap_platform_device_win.h
+++ b/skia/ext/bitmap_platform_device_win.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -75,7 +75,7 @@ class BitmapPlatformDevice : public PlatformDevice {
 
   // Retrieves the bitmap DC, which is the memory DC for our bitmap data. The
   // bitmap DC is lazy created.
-  virtual HDC getBitmapDC();
+  virtual HDC beginPlatformPaint();
 
   // Loads the given transform and clipping region into the HDC. This is
   // overridden from SkDevice.