Create a new action triggered when a BeginMainFrame is not expected before vsync

third_party/WebKit/Source/platform/scheduler/renderer/renderer_scheduler_impl.h

 // Copyright 2014 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.
 
 #ifndef THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_
 #define THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_
 
 #include "base/atomicops.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
@@ skipping 72 matching lines @@
   RendererSchedulerImpl(scoped_refptr<SchedulerTqmDelegate> main_task_runner);
   ~RendererSchedulerImpl() override;
 
   // RendererScheduler implementation:
   std::unique_ptr<WebThread> CreateMainThread() override;
   scoped_refptr<SingleThreadIdleTaskRunner> IdleTaskRunner() override;
   std::unique_ptr<RenderWidgetSchedulingState> NewRenderWidgetSchedulingState()
       override;
   void WillBeginFrame(const cc::BeginFrameArgs& args) override;
   void BeginFrameNotExpectedSoon() override;
+  void BeginMainFrameNotExpectedUntil(base::TimeTicks time) override;
   void DidCommitFrameToCompositor() override;
   void DidHandleInputEventOnCompositorThread(
       const WebInputEvent& web_input_event,
       InputEventState event_state) override;
   void DidHandleInputEventOnMainThread(const WebInputEvent& web_input_event,
                                        WebInputEventResult result) override;
   void DidAnimateForInputOnCompositorThread() override;
   void OnRendererBackgrounded() override;
   void OnRendererForegrounded() override;
   void SuspendRenderer() override;
@@ skipping 447 matching lines @@
 
   base::WeakPtrFactory<RendererSchedulerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererSchedulerImpl);
 };
 
 }  // namespace scheduler
 }  // namespace blink
 
 #endif  // THIRD_PARTY_WEBKIT_SOURCE_PLATFORM_SCHEDULER_RENDERER_RENDERER_SCHEDULER_IMPL_H_