aw: Fix FBO restore in webview functor

android_webview/browser/surfaces_instance.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 ANDROID_WEBVIEW_BROWSER_SURFACES_INSTANCE_H_
 #define ANDROID_WEBVIEW_BROWSER_SURFACES_INSTANCE_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 22 matching lines @@
 class ScopedAppGLStateRestore;
 
 class SurfacesInstance : public base::RefCounted<SurfacesInstance>,
                          public cc::DisplayClient,
                          public cc::SurfaceFactoryClient {
  public:
   static scoped_refptr<SurfacesInstance> GetOrCreateInstance();
 
   uint32_t AllocateSurfaceClientId();
   cc::SurfaceManager* GetSurfaceManager();
-  void SetBackingFrameBufferObject(int framebuffer_binding_ext);
 
   void DrawAndSwap(const gfx::Size& viewport,
                    const gfx::Rect& clip,
                    const gfx::Transform& transform,
                    const gfx::Size& frame_size,
                    const cc::SurfaceId& child_id,
                    const ScopedAppGLStateRestore& gl_state);
 
   void AddChildId(const cc::SurfaceId& child_id);
   void RemoveChildId(const cc::SurfaceId& child_id);
@@ skipping 12 matching lines @@
   void DisplayDidDrawAndSwap() override {}
 
   // cc::SurfaceFactoryClient implementation.
   void ReturnResources(const cc::ReturnedResourceArray& resources) override;
   void SetBeginFrameSource(cc::BeginFrameSource* begin_frame_source) override;
 
   void SetEmptyRootFrame();
 
   uint32_t next_surface_client_id_;
 
-  scoped_refptr<AwGLSurface> gl_surface_;
   std::unique_ptr<cc::SurfaceManager> surface_manager_;
   std::unique_ptr<cc::Display> display_;
   std::unique_ptr<cc::SurfaceIdAllocator> surface_id_allocator_;
   std::unique_ptr<cc::SurfaceFactory> surface_factory_;
 
   cc::SurfaceId root_id_;
   std::vector<cc::SurfaceId> child_ids_;
 
   // This is owned by |display_|.
   ParentOutputSurface* output_surface_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfacesInstance);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_SURFACES_INSTANCE_H_