Replace image_messages.h with Mojo service

content/browser/image_downloader/image_downloader_dispatcher.cc

+// 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 "content/browser/image_downloader/image_downloader_dispatcher.h"
+
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/common/service_registry.h"
+#include "mojo/common/url_type_converters.h"
+#include "mojo/converters/geometry/geometry_type_converters.h"
+#include "skia/public/type_converters.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/gfx/geometry/size.h"
+#include "url/gurl.h"
+
+namespace content {
+namespace {
+
+void DidDownload(const WebContents::ImageDownloadCallback& callback,
+                 int id,
+                 const GURL& image_url,
+                 image_downloader::DownloadResultPtr result) {
+  DCHECK(result);
+
+  const std::vector<SkBitmap> images =
+      result->images.To<std::vector<SkBitmap>>();
+  const std::vector<gfx::Size> original_image_sizes =
+      result->original_image_sizes.To<std::vector<gfx::Size>>();
+
+  callback.Run(id, result->http_status_code, image_url, images,
+               original_image_sizes);
+}
+
+}  // namespace
+
+// static
+int ImageDownloaderDispatcher::next_image_download_id_ = 0;
+
+ImageDownloaderDispatcher::ImageDownloaderDispatcher(
+    RenderFrameHost* render_frame_host)
+    : render_frame_host_(render_frame_host) {
+  DCHECK(render_frame_host_);
+}
+
+ImageDownloaderDispatcher::~ImageDownloaderDispatcher() {
+}
+
+int ImageDownloaderDispatcher::StartDownload(
+    const GURL& url,
+    bool is_favicon,
+    uint32_t max_bitmap_size,
+    bool bypass_cache,
+    const WebContents::ImageDownloadCallback& callback) {
+  image_downloader::DownloadRequestPtr req =
+      image_downloader::DownloadRequest::New();
+
+  if (!downloader_.get()) {
+    render_frame_host_->GetServiceRegistry()->ConnectToRemoteService(
+        mojo::GetProxy(&downloader_));
+    downloader_.set_error_handler(this);
+  }
+
+  req->url = mojo::String::From(url);
+  req->is_favicon = is_favicon;
+  req->max_bitmap_size = max_bitmap_size;
+  req->bypass_cache = bypass_cache;
+
+  downloader_->DownloadImage(
+      req.Pass(),
+      base::Bind(&DidDownload, callback, ++next_image_download_id_, url));
+  return next_image_download_id_;
+}
+
+void ImageDownloaderDispatcher::OnConnectionError() {
+  downloader_.reset();
+}
+
+}  // namespace content