compositor-worker: Initialize CW machinery plumbing to compositor and fire CW rAF callbacks.

cc/trees/threaded_channel.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 "cc/trees/threaded_channel.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/single_thread_task_runner.h"
 #include "base/trace_event/trace_event.h"
 #include "cc/animation/animation_events.h"
+#include "cc/animation/layer_tree_mutator.h"
 #include "cc/trees/layer_tree_host.h"
 
 namespace cc {
 
 std::unique_ptr<ThreadedChannel> ThreadedChannel::Create(
     ProxyMain* proxy_main,
     TaskRunnerProvider* task_runner_provider) {
   return base::WrapUnique(
       new ThreadedChannel(proxy_main, task_runner_provider));
 }
@@ skipping 25 matching lines @@
 }
 
 void ThreadedChannel::InitializeOutputSurfaceOnImpl(
     OutputSurface* output_surface) {
   DCHECK(IsMainThread());
   ImplThreadTaskRunner()->PostTask(
       FROM_HERE, base::Bind(&ProxyImpl::InitializeOutputSurfaceOnImpl,
                             proxy_impl_weak_ptr_, output_surface));
 }
 
+void ThreadedChannel::InitializeMutatorOnImpl(
+    std::unique_ptr<LayerTreeMutator> mutator) {
+  ImplThreadTaskRunner()->PostTask(
+      FROM_HERE,
+      base::Bind(&ProxyImpl::InitializeMutatorOnImpl, proxy_impl_weak_ptr_,
+                 base::Passed(std::move(mutator))));
+}
+
 void ThreadedChannel::MainThreadHasStoppedFlingingOnImpl() {
   DCHECK(IsMainThread());
   ImplThreadTaskRunner()->PostTask(
       FROM_HERE, base::Bind(&ProxyImpl::MainThreadHasStoppedFlingingOnImpl,
                             proxy_impl_weak_ptr_));
 }
 
 void ThreadedChannel::SetInputThrottledUntilCommitOnImpl(bool is_throttled) {
   DCHECK(IsMainThread());
   ImplThreadTaskRunner()->PostTask(
@@ skipping 276 matching lines @@
 
 ThreadedChannel::MainThreadOnly::~MainThreadOnly() {}
 
 ThreadedChannel::CompositorThreadOnly::CompositorThreadOnly(
     base::WeakPtr<ProxyMain> proxy_main_weak_ptr)
     : proxy_main_weak_ptr(proxy_main_weak_ptr) {}
 
 ThreadedChannel::CompositorThreadOnly::~CompositorThreadOnly() {}
 
 }  // namespace cc