Refactor image handling in Sky

sky/engine/core/loader/NewImageLoader.cpp

-// 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.
-
-#include "sky/engine/config.h"
-#include "sky/engine/core/loader/NewImageLoader.h"
-#include "sky/engine/platform/image-decoders/ImageDecoder.h"
-#include "sky/engine/platform/SharedBuffer.h"
-
-namespace blink {
-
-NewImageLoader::NewImageLoader(NewImageLoaderClient* client) : client_(client) {
-}
-
-NewImageLoader::~NewImageLoader() {
-}
-
-void NewImageLoader::Load(const KURL& src) {
-  fetcher_ = adoptPtr(new MojoFetcher(this, src));
-}
-
-void NewImageLoader::OnReceivedResponse(mojo::URLResponsePtr response) {
-  if (response->status_code != 200) {
-    client_->OnLoadFinished(SkBitmap());
-    return;
-  }
-  buffer_ = SharedBuffer::create();
-  drainer_ =
-      adoptPtr(new mojo::common::DataPipeDrainer(this, response->body.Pass()));
-}
-
-void NewImageLoader::OnDataAvailable(const void* data, size_t num_bytes) {
-  buffer_->append(static_cast<const char*>(data), num_bytes);
-}
-
-void NewImageLoader::OnDataComplete() {
-  SkBitmap bitmap;
-  OwnPtr<ImageDecoder> decoder =
-      ImageDecoder::create(*buffer_.get(), ImageSource::AlphaPremultiplied,
-                           ImageSource::GammaAndColorProfileIgnored);
-  decoder->setData(buffer_.get(), true);
-
-  if (decoder->failed()) {
-    client_->OnLoadFinished(bitmap);
-  } else {
-    if (decoder->frameCount() > 0) {
-      bitmap = decoder->frameBufferAtIndex(0)->getSkBitmap();
-    }
-    client_->OnLoadFinished(bitmap);
-  }
-}
-
-}  // namespace blink