Refactor image handling in Sky

sky/engine/core/loader/NewImageLoader.h

-// Copyright 2015 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 SKY_ENGINE_CORE_LOADER_NEWIMAGELOADER_H_
-#define SKY_ENGINE_CORE_LOADER_NEWIMAGELOADER_H_
-
-#include "mojo/common/data_pipe_drainer.h"
-#include "sky/engine/platform/SharedBuffer.h"
-#include "sky/engine/platform/fetcher/MojoFetcher.h"
-#include "sky/engine/wtf/OwnPtr.h"
-#include "sky/engine/wtf/text/AtomicString.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-
-namespace blink {
-
-class NewImageLoaderClient {
- public:
-  virtual void OnLoadFinished(const SkBitmap& result) = 0;
-
- protected:
-  NewImageLoaderClient() {}
-};
-
-class NewImageLoader : public MojoFetcher::Client,
-                       public mojo::common::DataPipeDrainer::Client {
- public:
-  explicit NewImageLoader(NewImageLoaderClient* client);
-  virtual ~NewImageLoader();
-
-  void Load(const KURL& src);
-
-  // MojoFetcher::Client
-  void OnReceivedResponse(mojo::URLResponsePtr) override;
-
-  // mojo::common::DataPipeDrainer::Client
-  void OnDataAvailable(const void*, size_t) override;
-  void OnDataComplete() override;
-
- private:
-  NewImageLoaderClient* client_;
-  OwnPtr<MojoFetcher> fetcher_;
-  OwnPtr<mojo::common::DataPipeDrainer> drainer_;
-  RefPtr<SharedBuffer> buffer_;
-};
-
-}  // namespace blink
-
-#endif  // SKY_ENGINE_CORE_LOADER_NEWIMAGELOADER_H_