Remove logic for lazy initialization of WebKit.

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 "components/web_cache/renderer/web_cache_render_process_observer.h"
-#include "content/public/renderer/render_thread.h"
 
 namespace blimp {
 namespace engine {
 
 BlimpContentRendererClient::BlimpContentRendererClient(
     scoped_ptr<BlimpImageSerializationProcessor> image_serialization_processor)
     : image_serialization_processor_(std::move(image_serialization_processor)) {
 }
 
 BlimpContentRendererClient::~BlimpContentRendererClient() {}
 
 void BlimpContentRendererClient::RenderThreadStarted() {
   web_cache_observer_.reset(new web_cache::WebCacheRenderProcessObserver());
-  content::RenderThread::Get()->AddObserver(web_cache_observer_.get());
 }
 
 cc::ImageSerializationProcessor*
 BlimpContentRendererClient::GetImageSerializationProcessor() {
   return image_serialization_processor_.get();
 }
 
 }  // namespace engine
 }  // namespace blimp