cc: Clean up LayerTreeTest and TestHooks.

cc/trees/proxy_main.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/proxy_main.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/trace_event/trace_event.h"
@@ skipping 227 matching lines @@
 
     // This CapturePostTasks should be destroyed before CommitComplete() is
     // called since that goes out to the embedder, and we want the embedder
     // to receive its callbacks before that.
     BlockingTaskRunner::CapturePostTasks blocked(
         task_runner_provider_->blocking_main_thread_task_runner());
 
     bool hold_commit_for_activation = commit_waits_for_activation_;
     commit_waits_for_activation_ = false;
     CompletionEvent completion;
-    channel_main_->StartCommitOnImpl(&completion, layer_tree_host_,
-                                     begin_main_frame_start_time,
-                                     hold_commit_for_activation);
+    channel_main_->NotifyReadyToCommitOnImpl(&completion, layer_tree_host_,
+                                             begin_main_frame_start_time,
+                                             hold_commit_for_activation);
     completion.Wait();
   }
 
   current_pipeline_stage_ = NO_PIPELINE_STAGE;
   layer_tree_host_->CommitComplete();
   layer_tree_host_->DidBeginMainFrame();
 }
 
 void ProxyMain::FinishAllRendering() {
   DCHECK(IsMainThread());
@@ skipping 194 matching lines @@
     return false;
   channel_main_->SetNeedsCommitOnImpl();
   return true;
 }
 
 bool ProxyMain::IsMainThread() const {
   return task_runner_provider_->IsMainThread();
 }
 
 }  // namespace cc