cc: Rename VSync to BeginFrame

cc/scheduler/frame_rate_controller.cc

 // Copyright 2011 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/scheduler/frame_rate_controller.h"
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "cc/base/thread.h"
 #include "cc/scheduler/delay_based_time_source.h"
@@ skipping 80 matching lines @@
 void FrameRateController::SetSwapBuffersCompleteSupported(bool supported) {
   swap_buffers_complete_supported_ = supported;
 }
 
 void FrameRateController::OnTimerTick() {
   DCHECK(active_);
 
   // Check if we have too many frames in flight.
   bool throttled =
       max_frames_pending_ && num_frames_pending_ >= max_frames_pending_;
-  TRACE_COUNTER_ID1("cc", "ThrottledVSyncInterval", thread_, throttled);
+  TRACE_COUNTER_ID1("cc", "ThrottledCompositor", thread_, throttled);
 
   if (client_)
-    client_->VSyncTick(throttled);
+    client_->BeginFrame(throttled);
 
   if (swap_buffers_complete_supported_ && !is_time_source_throttling_ &&
       !throttled)
     PostManualTick();
 }
 
 void FrameRateController::PostManualTick() {
   if (active_) {
     thread_->PostTask(base::Bind(&FrameRateController::ManualTick,
                                  weak_factory_.GetWeakPtr()));
@@ skipping 30 matching lines @@
 }
 
 base::TimeTicks FrameRateController::LastTickTime() {
   if (is_time_source_throttling_)
     return time_source_->LastTickTime();
 
   return base::TimeTicks::Now();
 }
 
 }  // namespace cc