Fix surfaces scheduler so apps can draw

services/surfaces/surfaces_scheduler.cc

 // 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.
 
 #include "services/surfaces/surfaces_scheduler.h"
 
 namespace surfaces {
 
 SurfacesScheduler::Client::~Client() {
 }
 
 SurfacesScheduler::SurfacesScheduler(Client* client) : client_(client) {
   cc::SchedulerSettings settings;
   scheduler_ = cc::Scheduler::Create(
       this, settings, 0, base::MessageLoop::current()->task_runner(), nullptr,
       nullptr);
   scheduler_->SetCanStart();
   scheduler_->SetVisible(true);
   scheduler_->SetCanDraw(true);
+  scheduler_->SetNeedsCommit();
 }
 
 SurfacesScheduler::~SurfacesScheduler() {
 }
 
 void SurfacesScheduler::SetNeedsDraw() {
   scheduler_->SetNeedsRedraw();
 }
 
 void SurfacesScheduler::OnVSyncParametersUpdated(base::TimeTicks timebase,
                                                  base::TimeDelta interval) {
   scheduler_->CommitVSyncParameters(timebase, interval);
 }
 
 void SurfacesScheduler::WillBeginImplFrame(const cc::BeginFrameArgs& args) {
 }
 
 void SurfacesScheduler::ScheduledActionSendBeginMainFrame() {
+  scheduler_->NotifyBeginMainFrameStarted();
+  scheduler_->NotifyReadyToCommit();
 }
 
 cc::DrawResult SurfacesScheduler::ScheduledActionDrawAndSwapIfPossible() {
   base::TimeTicks start = base::TimeTicks::Now();
   client_->Draw();
   base::TimeDelta duration = base::TimeTicks::Now() - start;
 
   draw_estimate_ = (duration + draw_estimate_) / 2;
   return cc::DRAW_SUCCESS;
 }
@@ skipping 35 matching lines @@
 }
 
 void SurfacesScheduler::DidBeginImplFrameDeadline() {
 }
 
 void SurfacesScheduler::SendBeginFramesToChildren(
     const cc::BeginFrameArgs& args) {
 }
 
 }  // namespace mojo