Replace image_messages.h with Mojo service

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index d4cc6f50c5f352ef7c908d8f5601785b97335ec6..efa33e3cc25ab35701d54241f0e1626bfce00699 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -1750,6 +1750,9 @@ void RenderFrameHostImpl::InvalidateMojoConnection() {
 #endif
 
   service_registry_.reset();
+
+  // Disconnect with ImageDownloader Mojo service in render frame.

[nasko, 2015/04/15 20:57:22]

nit: s/render frame/RenderFrame/

[leonhsl(Using Gerrit), 2015/04/17 06:14:34]

Done.

+  image_downloader_dispatcher_.reset();
 }
 
 bool RenderFrameHostImpl::IsFocused() {
@@ -1762,6 +1765,19 @@ bool RenderFrameHostImpl::IsFocused() {
           frame_tree_->GetFocusedFrame()->IsDescendantOf(frame_tree_node()));
 }
 
+int RenderFrameHostImpl::DownloadImage(
+    const GURL& url,
+    bool is_favicon,
+    uint32_t max_bitmap_size,
+    bool bypass_cache,
+    const WebContents::ImageDownloadCallback& callback) {
+  if (!image_downloader_dispatcher_)
+    image_downloader_dispatcher_.reset(new ImageDownloaderDispatcher(this));
+
+  return image_downloader_dispatcher_->StartDownload(
+      url, is_favicon, max_bitmap_size, bypass_cache, callback);
+}
+
 void RenderFrameHostImpl::UpdateCrossProcessIframeAccessibility(
     const std::map<int32, int>& node_to_frame_routing_id_map) {
   for (const auto& iter : node_to_frame_routing_id_map) {