Revert "Delete the Surfaces service."

services/surfaces/surfaces_scheduler.h

Index: services/surfaces/surfaces_scheduler.h
diff --git a/services/surfaces/surfaces_scheduler.h b/services/surfaces/surfaces_scheduler.h
new file mode 100644
index 0000000000000000000000000000000000000000..1c98af10ce30f0bfd9f5fd0f3833bb8c636606ac
--- /dev/null
+++ b/services/surfaces/surfaces_scheduler.h
@@ -0,0 +1,58 @@
+// 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"
+
+namespace cc {
+class Display;
+}
+
+namespace surfaces {
+
+class SurfacesScheduler : public cc::SchedulerClient {
+ public:
+  SurfacesScheduler();
+  ~SurfacesScheduler() override;
+
+  void SetNeedsDraw();
+
+  void OnVSyncParametersUpdated(base::TimeTicks timebase,
+                                base::TimeDelta interval);
+
+  void AddDisplay(cc::Display* display);
+  void RemoveDisplay(cc::Display* display);
+
+ 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 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_