Automatically redraw the display on resume.

services/surfaces/display_impl.h

 // Copyright 2015 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 SERVICES_SURFACES_DISPLAY_IMPL_H_
 #define SERVICES_SURFACES_DISPLAY_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/surfaces/display_client.h"
 #include "cc/surfaces/surface_factory.h"
@@ skipping 33 matching lines @@
   void DisplayDamaged() override;
   void DidSwapBuffers() override;
   void DidSwapBuffersComplete() override;
   void CommitVSyncParameters(base::TimeTicks timebase,
                              base::TimeDelta interval) override;
   void OutputSurfaceLost() override;
 
   // ViewportParameterListener
   void OnVSyncParametersUpdated(int64_t timebase, int64_t interval) override;
 
+  // Callback for ContextProvider::NotifyOnViewport
+  void OnViewportCreated();
+
   // SurfaceFactoryClient implementation.
   void ReturnResources(const cc::ReturnedResourceArray& resources) override;
 
   void Draw();
 
   cc::SurfaceManager* manager_;
   cc::SurfaceFactory factory_;
   cc::SurfaceId cc_id_;
   SurfacesScheduler* scheduler_;
   mojo::ContextProviderPtr context_provider_;
   mojo::ResourceReturnerPtr returner_;
 
   gfx::Size last_submitted_frame_size_;
   mojo::FramePtr pending_frame_;
   SubmitFrameCallback pending_callback_;
 
   scoped_ptr<cc::Display> display_;
 
   mojo::Binding<mojo::ViewportParameterListener> viewport_param_binding_;
   mojo::StrongBinding<mojo::Display> display_binding_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayImpl);
 };
 
 }  // namespace surfaces
 
 #endif  // SERVICES_SURFACES_DISPLAY_IMPL_H_