Fix GN build after r323361 (two changes collided).

mojo/services/surfaces/surfaces_scheduler.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 MOJO_SERVICES_SURFACES_SURFACES_SCHEDULER_H_
 #define MOJO_SERVICES_SURFACES_SURFACES_SCHEDULER_H_
 
 #include <set>
 
 #include "cc/scheduler/scheduler.h"
@@ skipping 20 matching lines @@
  private:
   void WillBeginImplFrame(const cc::BeginFrameArgs& args) override;
   void ScheduledActionSendBeginMainFrame() override;
   cc::DrawResult ScheduledActionDrawAndSwapIfPossible() override;
   cc::DrawResult ScheduledActionDrawAndSwapForced() override;
   void ScheduledActionAnimate() override;
   void ScheduledActionCommit() override;
   void ScheduledActionActivateSyncTree() override;
   void ScheduledActionBeginOutputSurfaceCreation() override;
   void ScheduledActionPrepareTiles() override;
+  void ScheduledActionInvalidateOutputSurface() override;
   void DidAnticipatedDrawTimeChange(base::TimeTicks time) override;
   base::TimeDelta DrawDurationEstimate() override;
   base::TimeDelta BeginMainFrameToCommitDurationEstimate() override;
   base::TimeDelta CommitToActivateDurationEstimate() override;
   void DidBeginImplFrameDeadline() override;
   void SendBeginFramesToChildren(const cc::BeginFrameArgs& args) override;
   void SendBeginMainFrameNotExpectedSoon() override;
 
   std::set<cc::Display*> displays_;
   scoped_ptr<cc::Scheduler> scheduler_;
   base::TimeDelta draw_estimate_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfacesScheduler);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_SURFACES_SURFACES_SCHEDULER_H_