cc: Rename VSync to BeginFrame

cc/scheduler/scheduler.cc

Index: cc/scheduler/scheduler.cc
diff --git a/cc/scheduler/scheduler.cc b/cc/scheduler/scheduler.cc
index abbc7aa896459e0c1767c4344ea240499e3d663f..fe2a70cc897196db70c05a2c1aaefeb2eb0d200d 100644
--- a/cc/scheduler/scheduler.cc
+++ b/cc/scheduler/scheduler.cc
@@ -20,7 +20,7 @@ Scheduler::Scheduler(SchedulerClient* client,
       inside_process_scheduled_actions_(false) {
   DCHECK(client_);
   frame_rate_controller_->SetClient(this);
-  DCHECK(!state_machine_.VSyncCallbackNeeded());
+  DCHECK(!state_machine_.BeginFrameCallbackNeeded());
 }
 
 Scheduler::~Scheduler() { frame_rate_controller_->SetActive(false); }
@@ -131,17 +131,17 @@ base::TimeTicks Scheduler::AnticipatedDrawTime() {
   return frame_rate_controller_->NextTickTime();
 }
 
-base::TimeTicks Scheduler::LastVSyncTime() {
+base::TimeTicks Scheduler::LastBeginFrameTime() {
   return frame_rate_controller_->LastTickTime();
 }
 
-void Scheduler::VSyncTick(bool throttled) {
-  TRACE_EVENT1("cc", "Scheduler::VSyncTick", "throttled", throttled);
+void Scheduler::BeginFrame(bool throttled) {
+  TRACE_EVENT1("cc", "Scheduler::BeginFrame", "throttled", throttled);
   if (!throttled)
-    state_machine_.DidEnterVSync();
+    state_machine_.DidEnterBeginFrame();
   ProcessScheduledActions();
   if (!throttled)
-    state_machine_.DidLeaveVSync();
+    state_machine_.DidLeaveBeginFrame();
 }
 
 void Scheduler::ProcessScheduledActions() {
@@ -199,7 +199,7 @@ void Scheduler::ProcessScheduledActions() {
   }
 
   // Activate or deactivate the frame rate controller.
-  frame_rate_controller_->SetActive(state_machine_.VSyncCallbackNeeded());
+  frame_rate_controller_->SetActive(state_machine_.BeginFrameCallbackNeeded());
   client_->DidAnticipatedDrawTimeChange(frame_rate_controller_->NextTickTime());
 }