Simplify platform_canvas.h by recognizing that PlatformCanvas does not actually extend

skia/ext/bitmap_platform_device_win.cc

 // 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.
 
 #include <windows.h>
 #include <psapi.h>
 
 #include "skia/ext/bitmap_platform_device_win.h"
 #include "skia/ext/bitmap_platform_device_data.h"
 #include "skia/ext/platform_canvas.h"
@@ skipping 250 matching lines @@
 
 SkDevice* BitmapPlatformDevice::onCreateCompatibleDevice(
     SkBitmap::Config config, int width, int height, bool isOpaque,
     Usage /*usage*/) {
   SkASSERT(config == SkBitmap::kARGB_8888_Config);
   SkDevice* bitmap_device = BitmapPlatformDevice::CreateAndClear(width, height,
                                                                  isOpaque);
   return bitmap_device;
 }
 
+// PlatformCanvas impl
+
+SkCanvas* CreatePlatformCanvas(int width, int height, bool is_opaque,
+                             HANDLE shared_section, OnFailureType failureType) {

[sky, 2012/11/05 14:43:10]

nit: indentation. Also, when you wrap each param should be on its own line.

[reed1, 2012/11/05 19:14:13]

Done.

+  SkDevice* dev = BitmapPlatformDevice::Create(width, height, is_opaque,
+                                               shared_section);
+  return CreateCanvas(dev, failureType);
+}
+
 // Port of PlatformBitmap to win
 
 PlatformBitmap::~PlatformBitmap() {
   if (surface_)
     DeleteDC(surface_);
 }
 
 bool PlatformBitmap::Allocate(int width, int height, bool is_opaque) {
   HBITMAP hbitmap = CreateHBitmap(width, height, is_opaque, 0, &bitmap_);
   if (!hbitmap)
     return false;
 
   surface_ = CreateCompatibleDC(NULL);
   InitializeDC(surface_);
   HGDIOBJ old_bitmap = SelectObject(surface_, hbitmap);
   // When the memory DC is created, its display surface is exactly one
   // monochrome pixel wide and one monochrome pixel high. Since we select our
   // own bitmap, we must delete the previous one.
   DeleteObject(old_bitmap);
   return true;
 }
 
 }  // namespace skia