Remove PlatformCanvas::GetBitmapContext()

skia/ext/bitmap_platform_device_mac.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 "skia/ext/bitmap_platform_device_mac.h"
 
 #import <ApplicationServices/ApplicationServices.h>
 #include <stddef.h>
 #include <time.h>
 
@@ skipping 226 matching lines @@
   // We must save the state once so that we can use the restore/save trick
   // in LoadConfig().
   CGContextSaveGState(bitmap_context_);
 }
 
 BitmapPlatformDevice::~BitmapPlatformDevice() {
   if (bitmap_context_)
     CGContextRelease(bitmap_context_);
 }
 
-CGContextRef BitmapPlatformDevice::GetBitmapContext(const SkMatrix& transform,
-                                                    const SkIRect& clip_bounds) {
+NativeDrawingContext BitmapPlatformDevice::BeginPlatformPaint(
+    const SkMatrix& transform,
+    const SkIRect& clip_bounds) {
   LoadConfig(transform, clip_bounds);
   return bitmap_context_;
 }
 
 SkBaseDevice* BitmapPlatformDevice::onCreateDevice(const CreateInfo& cinfo,
                                                    const SkPaint*) {
   const SkImageInfo& info = cinfo.fInfo;
   const bool do_clear = !info.isOpaque();
   SkASSERT(info.colorType() == kN32_SkColorType);
   return Create(NULL, info.width(), info.height(), info.isOpaque(), do_clear);
 }
 
 // PlatformCanvas impl
 
 std::unique_ptr<SkCanvas> CreatePlatformCanvasWithPixels(
     int width,
     int height,
     bool is_opaque,
     uint8_t* data,
     OnFailureType failureType) {
   sk_sp<SkBaseDevice> dev(
       BitmapPlatformDevice::CreateWithData(data, width, height, is_opaque));
   return CreateCanvas(dev, failureType);
 }
 
 }  // namespace skia