Move output surface fallback from cc to embedders

ui/compositor/compositor.h

 // Copyright (c) 2012 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_COMPOSITOR_COMPOSITOR_H_
 #define UI_COMPOSITOR_COMPOSITOR_H_
 
 #include <string>
 
 #include "base/containers/hash_tables.h"
@@ skipping 56 matching lines @@
  public:
   virtual ~ContextFactory() {}
 
   // Creates an output surface for the given compositor. The factory may keep
   // per-compositor data (e.g. a shared context), that needs to be cleaned up
   // by calling RemoveCompositor when the compositor gets destroyed.
   virtual void CreateOutputSurface(base::WeakPtr<Compositor> compositor,
                                    bool software_fallback) = 0;
 
   // Creates a reflector that copies the content of the |mirrored_compositor|
-  // onto |mirroing_layer|.
+  // onto |mirroring_layer|.
   virtual scoped_refptr<Reflector> CreateReflector(
       Compositor* mirrored_compositor,
       Layer* mirroring_layer) = 0;
   // Removes the reflector, which stops the mirroring.
   virtual void RemoveReflector(scoped_refptr<Reflector> reflector) = 0;
 
   // Return a reference to a shared offscreen context provider usable from the
   // main thread.
   virtual scoped_refptr<cc::ContextProvider>
       SharedMainThreadContextProvider() = 0;
@@ skipping 162 matching lines @@
   void BeginMainFrame(const cc::BeginFrameArgs& args) override;
   void Layout() override;
   void ApplyViewportDeltas(const gfx::Vector2d& inner_delta,
                            const gfx::Vector2d& outer_delta,
                            const gfx::Vector2dF& elastic_overscroll_delta,
                            float page_scale,
                            float top_controls_delta) override {}
   void ApplyViewportDeltas(const gfx::Vector2d& scroll_delta,
                            float page_scale,
                            float top_controls_delta) override {}
-  void RequestNewOutputSurface(bool fallback) override;
-  void DidInitializeOutputSurface() override {}
+  void RequestNewOutputSurface() override;
+  void DidInitializeOutputSurface() override;
+  void DidFailToInitializeOutputSurface() override;
   void WillCommit() override {}
   void DidCommit() override;
   void DidCommitAndDrawFrame() override;
   void DidCompleteSwapBuffers() override;
 
   // cc::LayerTreeHostSingleThreadClient implementation.
   void ScheduleComposite() override;
   void ScheduleAnimation() override;
   void DidPostSwapBuffers() override;
   void DidAbortSwapBuffers() override;
@@ skipping 12 matching lines @@
   }
 
   cc::SurfaceIdAllocator* surface_id_allocator() {
     return surface_id_allocator_.get();
   }
 
  private:
   friend class base::RefCounted<Compositor>;
   friend class CompositorLock;
 
+  enum {
+   OUTPUT_SURFACE_RETRIES_BEFORE_FALLBACK = 4,
+   MAX_OUTPUT_SURFACE_RETRIES = 5,
+  };
+
   // Called by CompositorLock.
   void UnlockCompositor();
 
   // Called to release any pending CompositorLock
   void CancelCompositorLock();
 
   // Notifies the compositor that compositing is complete.
   void NotifyEnd();
 
   gfx::Size size_;
@@ skipping 16 matching lines @@
   // The manager of vsync parameters for this compositor.
   scoped_refptr<CompositorVSyncManager> vsync_manager_;
 
   // The device scale factor of the monitor that this compositor is compositing
   // layers on.
   float device_scale_factor_;
 
   int last_started_frame_;
   int last_ended_frame_;
 
+  int num_failed_recreate_attempts_;
+
   bool disable_schedule_composite_;
 
   CompositorLock* compositor_lock_;
 
   // Prevent more than one draw from being scheduled.
   bool defer_draw_scheduling_;
 
   // Used to prevent Draw()s while a composite is in progress.
   bool waiting_on_compositing_end_;
   bool draw_on_compositing_end_;
   enum SwapState { SWAP_NONE, SWAP_POSTED, SWAP_COMPLETED };
   SwapState swap_state_;
 
   LayerAnimatorCollection layer_animator_collection_;
 
   base::WeakPtrFactory<Compositor> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Compositor);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_COMPOSITOR_H_