Keep vsync enabled while there is a pending requestAnimationFrame

cc/scheduler/scheduler.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/scheduler.h"
 
 #include "base/auto_reset.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 
@@ skipping 32 matching lines @@
 void Scheduler::SetHasPendingTree(bool has_pending_tree) {
   state_machine_.SetHasPendingTree(has_pending_tree);
   ProcessScheduledActions();
 }
 
 void Scheduler::SetNeedsCommit() {
   state_machine_.SetNeedsCommit();
   ProcessScheduledActions();
 }
 
+void Scheduler::SetAnimateRequested() {
+  state_machine_.SetAnimateRequested();
+  ProcessScheduledActions();
+}
+
 void Scheduler::SetNeedsForcedCommit() {
   state_machine_.SetNeedsCommit();
   state_machine_.SetNeedsForcedCommit();
   ProcessScheduledActions();
 }
 
 void Scheduler::SetNeedsRedraw() {
   state_machine_.SetNeedsRedraw();
   ProcessScheduledActions();
 }
@@ skipping 134 matching lines @@
   // Activate or deactivate the frame rate controller.
   frame_rate_controller_->SetActive(state_machine_.VSyncCallbackNeeded());
   client_->DidAnticipatedDrawTimeChange(frame_rate_controller_->NextTickTime());
 }
 
 bool Scheduler::WillDrawIfNeeded() const {
   return !state_machine_.DrawSuspendedUntilCommit();
 }
 
 }  // namespace cc