Update from https://crrev.com/314320

cc/surfaces/onscreen_display_client.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 CC_SURFACES_ONSCREEN_DISPLAY_CLIENT_H_
+#define CC_SURFACES_ONSCREEN_DISPLAY_CLIENT_H_
+
+#include "cc/surfaces/display_client.h"
+
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/single_thread_task_runner.h"
+#include "cc/surfaces/display.h"
+#include "cc/surfaces/surfaces_export.h"
+
+namespace cc {
+class ContextProvider;
+class SurfaceManager;
+class SurfaceDisplayOutputSurface;
+
+// This class provides a DisplayClient implementation for drawing directly to an
+// onscreen context.
+class CC_SURFACES_EXPORT OnscreenDisplayClient
+    : NON_EXPORTED_BASE(DisplayClient) {
+ public:
+  OnscreenDisplayClient(
+      scoped_ptr<OutputSurface> output_surface,
+      SurfaceManager* manager,
+      SharedBitmapManager* bitmap_manager,
+      gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
+      const RendererSettings& settings,
+      scoped_refptr<base::SingleThreadTaskRunner> task_runner);
+  ~OnscreenDisplayClient() override;
+
+  bool Initialize();
+  Display* display() { return display_.get(); }
+  void set_surface_output_surface(SurfaceDisplayOutputSurface* surface) {
+    surface_display_output_surface_ = surface;
+  }
+
+  // DisplayClient implementation.
+  void DisplayDamaged() override;
+  void DidSwapBuffers() override;
+  void DidSwapBuffersComplete() override;
+  void CommitVSyncParameters(base::TimeTicks timebase,
+                             base::TimeDelta interval) override;
+  void OutputSurfaceLost() override;
+  void SetMemoryPolicy(const ManagedMemoryPolicy& policy) override;
+
+  bool output_surface_lost() { return output_surface_lost_; }
+
+ private:
+  void ScheduleDraw();
+  void Draw();
+
+  scoped_ptr<OutputSurface> output_surface_;
+  scoped_ptr<Display> display_;
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+  SurfaceDisplayOutputSurface* surface_display_output_surface_;
+  bool scheduled_draw_;
+  bool output_surface_lost_;
+  // True if a draw should be scheduled, but it's hit the limit on max frames
+  // pending.
+  bool deferred_draw_;
+  int pending_frames_;
+
+  base::WeakPtrFactory<OnscreenDisplayClient> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(OnscreenDisplayClient);
+};
+
+}  // namespace cc
+
+#endif  // CC_SURFACES_ONSCREEN_DISPLAY_CLIENT_H_