cc: Introduce mechanism to observe CompositorFrames submitted to new surfaceIDs

cc/surfaces/display.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_DISPLAY_H_
 #define CC_SURFACES_DISPLAY_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 33 matching lines @@
 class SurfaceAggregator;
 class SurfaceIdAllocator;
 class SurfaceFactory;
 class TextureMailboxDeleter;
 
 // A Display produces a surface that can be used to draw to a physical display
 // (OutputSurface). The client is responsible for creating and sizing the
 // surface IDs used to draw into the display and deciding when to draw.
 class CC_SURFACES_EXPORT Display : public DisplaySchedulerClient,
                                    public OutputSurfaceClient,
-                                   public SurfaceDamageObserver {
+                                   public SurfaceObserver {
  public:
   // The |begin_frame_source| and |scheduler| may be null (together). In that
   // case, DrawAndSwap must be called externally when needed.
   Display(SharedBitmapManager* bitmap_manager,
           gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
           const RendererSettings& settings,
           std::unique_ptr<BeginFrameSource> begin_frame_source,
           std::unique_ptr<OutputSurface> output_surface,
           std::unique_ptr<DisplayScheduler> scheduler,
           std::unique_ptr<TextureMailboxDeleter> texture_mailbox_deleter);
@@ skipping 27 matching lines @@
   void DidLoseOutputSurface() override;
   void SetExternalTilePriorityConstraints(
       const gfx::Rect& viewport_rect,
       const gfx::Transform& transform) override;
   void SetMemoryPolicy(const ManagedMemoryPolicy& policy) override;
   void SetTreeActivationCallback(const base::Closure& callback) override;
   void OnDraw(const gfx::Transform& transform,
               const gfx::Rect& viewport,
               bool resourceless_software_draw) override;
 
-  // SurfaceDamageObserver implementation.
+  // SurfaceObserver implementation.
   void OnSurfaceDamaged(const SurfaceId& surface, bool* changed) override;
+  void OnSurfaceCreated(const SurfaceId& surface_id,
+                        const gfx::Size& frame,
+                        float device_scale_factor) override;
 
   bool has_scheduler() const { return !!scheduler_; }
   DirectRenderer* renderer_for_testing() const { return renderer_.get(); }
 
   void ForceImmediateDrawAndSwapIfPossible();
 
  private:
   void InitializeRenderer();
   void UpdateRootSurfaceResourcesLocked();
 
@@ skipping 24 matching lines @@
   SoftwareRenderer* software_renderer_ = nullptr;
   std::vector<ui::LatencyInfo> stored_latency_info_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Display);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_DISPLAY_H_