Revert "Revert "add new signature so skia can rely on it (subclass of SkDevice)""

skia/ext/bitmap_platform_device_skia.cc

 // Copyright 2013 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_skia.h"
 #include "skia/ext/platform_canvas.h"
 
 namespace skia {
 
 BitmapPlatformDevice* BitmapPlatformDevice::Create(int width, int height,
@@ skipping 31 matching lines @@
 BitmapPlatformDevice::~BitmapPlatformDevice() {
 }
 
 SkBaseDevice* BitmapPlatformDevice::onCreateCompatibleDevice(
                                                      const CreateInfo& info) {
   SkASSERT(info.fInfo.colorType() == kN32_SkColorType);
   return BitmapPlatformDevice::Create(info.fInfo.width(), info.fInfo.height(),
                                       info.fInfo.isOpaque());
 }
 
+SkBaseDevice* BitmapPlatformDevice::onCreateDevice(const CreateInfo& info,
+                                                   const SkPaint*) {
+  SkASSERT(info.fInfo.colorType() == kN32_SkColorType);
+  return BitmapPlatformDevice::Create(info.fInfo.width(), info.fInfo.height(),
+                                      info.fInfo.isOpaque());
+}
+
 PlatformSurface BitmapPlatformDevice::BeginPlatformPaint() {
   // TODO(zhenghao): What should we return? The ptr to the address of the
   // pixels? Maybe this won't be called at all.
   return accessBitmap(true).getPixels();
 }
 
 // PlatformCanvas impl
 
 SkCanvas* CreatePlatformCanvas(int width, int height, bool is_opaque,
                                uint8_t* data, OnFailureType failureType) {
   skia::RefPtr<SkBaseDevice> dev = skia::AdoptRef(
       BitmapPlatformDevice::Create(width, height, is_opaque, data));
   return CreateCanvas(dev, failureType);
 }
 
 // Port of PlatformBitmap to android
 PlatformBitmap::~PlatformBitmap() {
   // Nothing to do.
 }
 
 bool PlatformBitmap::Allocate(int width, int height, bool is_opaque) {
   if (!bitmap_.tryAllocN32Pixels(width, height, is_opaque))
     return false;
 
   surface_ = bitmap_.getPixels();
   return true;
 }
 
 }  // namespace skia