content: Remove blimp compositing dependencies.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index d51fe69dcc6a00e002ab87a5f47d2cd09e2e0ce9..dd4437d5b7b283ee1973c04408cdab4511fd10a6 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -1191,8 +1191,7 @@ void RenderThreadImpl::InitializeWebKit(
       resource_task_queue2);
   resource_dispatcher()->SetMainThreadTaskRunner(resource_task_queue2);
 
-  if (!command_line.HasSwitch(switches::kDisableThreadedCompositing) &&
-      !command_line.HasSwitch(switches::kUseRemoteCompositing))
+  if (!command_line.HasSwitch(switches::kDisableThreadedCompositing))
     InitializeCompositorThread();
 
   if (!input_event_filter_.get()) {
@@ -1596,11 +1595,6 @@ RenderThreadImpl::CreateExternalBeginFrameSource(int routing_id) {
       compositor_message_filter_.get(), sync_message_filter(), routing_id);
 }
 
-cc::ImageSerializationProcessor*
-RenderThreadImpl::GetImageSerializationProcessor() {
-  return GetContentClient()->renderer()->GetImageSerializationProcessor();
-}
-
 cc::TaskGraphRunner* RenderThreadImpl::GetTaskGraphRunner() {
   return categorized_worker_pool_->GetTaskGraphRunner();
 }