Enforce constant size and device scale factor for surfaces

ui/android/delegated_frame_host_android.h

 // Copyright 2016 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 UI_ANDROID_DELEGATED_FRAME_HOST_ANDROID_H_
 #define UI_ANDROID_DELEGATED_FRAME_HOST_ANDROID_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "cc/output/copy_output_request.h"
@@ skipping 61 matching lines @@
   cc::SurfaceId SurfaceId() const;
 
  private:
   // cc::CompositorFrameSinkSupportClient implementation.
   void DidReceiveCompositorFrameAck(
       const cc::ReturnedResourceArray& resources) override;
   void OnBeginFrame(const cc::BeginFrameArgs& args) override;
   void ReclaimResources(const cc::ReturnedResourceArray& resources) override;
   void WillDrawSurface(const cc::LocalSurfaceId& local_surface_id,
                        const gfx::Rect& damage_rect) override;
+  void DidRejectCompositorFrame() override;
 
   // cc::ExternalBeginFrameSourceClient implementation.
   void OnNeedsBeginFrames(bool needs_begin_frames) override;
   void OnDidFinishFrame(const cc::BeginFrameAck& ack) override;
 
   void CreateNewCompositorFrameSinkSupport();
 
   const cc::FrameSinkId frame_sink_id_;
 
   ViewAndroid* view_;
 
   cc::SurfaceManager* surface_manager_;
   WindowAndroidCompositor* registered_parent_compositor_ = nullptr;
   Client* client_;
 
   std::unique_ptr<cc::CompositorFrameSinkSupport> support_;
   cc::ExternalBeginFrameSource begin_frame_source_;
 
   cc::SurfaceInfo surface_info_;
   bool has_transparent_background_ = false;
 
   scoped_refptr<cc::SurfaceLayer> content_layer_;
 
   DISALLOW_COPY_AND_ASSIGN(DelegatedFrameHostAndroid);
 };
 
 }  // namespace ui
 
 #endif  // UI_ANDROID_DELEGATED_FRAME_HOST_ANDROID_H_