Replace image_messages.h with Mojo service

content/browser/frame_host/render_frame_host_impl.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 "content/browser/frame_host/render_frame_host_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/lazy_instance.h"
@@ skipping 1847 matching lines @@
 }
 
 void RenderFrameHostImpl::InvalidateMojoConnection() {
 #if defined(OS_ANDROID)
   // The Android-specific service registry has a reference to
   // |service_registry_| and thus must be torn down first.
   service_registry_android_.reset();
 #endif
 
   service_registry_.reset();
+
+  // Disconnect with ImageDownloader Mojo service in RenderFrame.
+  image_downloader_dispatcher_.reset();
 }
 
 bool RenderFrameHostImpl::IsFocused() {
   // TODO(mlamouri,kenrb): call GetRenderWidgetHost() directly when it stops
   // returning nullptr in some cases. See https://crbug.com/455245.
   return RenderWidgetHostImpl::From(
             GetView()->GetRenderWidgetHost())->is_focused() &&
          frame_tree_->GetFocusedFrame() &&
          (frame_tree_->GetFocusedFrame() == frame_tree_node() ||
           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) {
     // This is the id of the accessibility node that has a child frame.
     int32 node_id = iter.first;
     // The routing id from either a RenderFrame or a RenderFrameProxy.
     int frame_routing_id = iter.second;
 
     FrameTree* frame_tree = frame_tree_node()->frame_tree();
     FrameTreeNode* child_frame_tree_node = frame_tree->FindByRoutingID(
@@ skipping 210 matching lines @@
 }
 
 std::string RenderFrameHostImpl::CommitCountString() {
   std::string result = base::Int64ToString(reinterpret_cast<int64_t>(this));
   result += "/";
   result += base::IntToString(commit_count_);
   return result;
 }
 
 }  // namespace content