Blimp: create Mojo component for renderer/browser communication.

blimp/engine/app/blimp_content_renderer_client.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 "blimp/engine/app/blimp_content_renderer_client.h"
 
 #include "blimp/common/compositor/blimp_image_serialization_processor.h"
+#include "blimp/engine/mojo/blob_channel.mojom.h"
+#include "blimp/engine/renderer/engine_image_serialization_processor.h"
 #include "components/web_cache/renderer/web_cache_render_process_observer.h"
+#include "content/public/common/service_registry.h"
+#include "content/public/renderer/render_thread.h"
 
 namespace blimp {
 namespace engine {
+namespace {
 
-BlimpContentRendererClient::BlimpContentRendererClient(
-    scoped_ptr<BlimpImageSerializationProcessor> image_serialization_processor)
-    : image_serialization_processor_(std::move(image_serialization_processor)) {
+BlobChannelMojoPtr GetConnectedBlobChannel() {

[nyquist, 2016/04/05 22:13:19]

Is this call blocking across the renderer and browser process?

[Kevin M, 2016/04/06 00:01:44]

The renderer: yes (at startup), the browser: no. The handshake is practically
instantaneous even when the Mojo connection is cold.

+  BlobChannelMojoPtr blob_channel_ptr;
+  content::RenderThread::Get()->GetServiceRegistry()->ConnectToRemoteService(
+      mojo::GetProxy(&blob_channel_ptr));
+  DCHECK(blob_channel_ptr);
+  return blob_channel_ptr;
 }
 
+}  // namespace
+
+BlimpContentRendererClient::BlimpContentRendererClient() {}
+
 BlimpContentRendererClient::~BlimpContentRendererClient() {}
 
 void BlimpContentRendererClient::RenderThreadStarted() {
   web_cache_observer_.reset(new web_cache::WebCacheRenderProcessObserver());
+  image_serialization_processor_.reset(
+      new EngineImageSerializationProcessor(GetConnectedBlobChannel()));
 }
 
 cc::ImageSerializationProcessor*
 BlimpContentRendererClient::GetImageSerializationProcessor() {
   return image_serialization_processor_.get();
 }
 
 }  // namespace engine
 }  // namespace blimp