[M55] Generalize layer mirroring for phantom windows

content/browser/renderer_host/delegated_frame_host.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 CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "cc/output/copy_output_result.h"
 #include "cc/surfaces/surface_factory_client.h"
 #include "content/browser/compositor/image_transport_factory.h"
 #include "content/browser/compositor/owned_mailbox.h"
 #include "content/browser/renderer_host/delegated_frame_evictor.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/public/browser/render_process_host.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_observer.h"
 #include "ui/compositor/compositor_vsync_manager.h"
 #include "ui/compositor/layer.h"
-#include "ui/compositor/layer_owner_delegate.h"
 #include "ui/events/event.h"
 #include "ui/gfx/geometry/rect_conversions.h"
 
 namespace base {
 class TickClock;
 }
 
 namespace cc {
 class SurfaceFactory;
 }
@@ skipping 41 matching lines @@
   virtual bool IsAutoResizeEnabled() const = 0;
 };
 
 // The DelegatedFrameHost is used to host all of the RenderWidgetHostView state
 // and functionality that is associated with delegated frames being sent from
 // the RenderWidget. The DelegatedFrameHost will push these changes through to
 // the ui::Compositor associated with its DelegatedFrameHostClient.
 class CONTENT_EXPORT DelegatedFrameHost
     : public ui::CompositorObserver,
       public ui::CompositorVSyncManager::Observer,
-      public ui::LayerOwnerDelegate,
       public ui::ContextFactoryObserver,
       public DelegatedFrameEvictorClient,
       public cc::SurfaceFactoryClient,
       public base::SupportsWeakPtr<DelegatedFrameHost> {
  public:
   DelegatedFrameHost(const cc::FrameSinkId& frame_sink_id,
                      DelegatedFrameHostClient* client);
   ~DelegatedFrameHost() override;
 
   // ui::CompositorObserver implementation.
   void OnCompositingDidCommit(ui::Compositor* compositor) override;
   void OnCompositingStarted(ui::Compositor* compositor,
                             base::TimeTicks start_time) override;
   void OnCompositingEnded(ui::Compositor* compositor) override;
   void OnCompositingAborted(ui::Compositor* compositor) override;
   void OnCompositingLockStateChanged(ui::Compositor* compositor) override;
   void OnCompositingShuttingDown(ui::Compositor* compositor) override;
 
   // ui::CompositorVSyncManager::Observer implementation.
   void OnUpdateVSyncParameters(base::TimeTicks timebase,
                                base::TimeDelta interval) override;
 
-  // ui::LayerOwnerObserver implementation.
-  void OnLayerRecreated(ui::Layer* old_layer, ui::Layer* new_layer) override;
-
   // ImageTransportFactoryObserver implementation.
   void OnLostResources() override;
 
   // DelegatedFrameEvictorClient implementation.
   void EvictDelegatedFrame() override;
 
   // cc::SurfaceFactoryClient implementation.
   void ReturnResources(const cc::ReturnedResourceArray& resources) override;
   void WillDrawSurface(const cc::LocalFrameId& id,
                        const gfx::Rect& damage_rect) override;
@@ skipping 213 matching lines @@
   // YUV readback pipeline.
   std::unique_ptr<display_compositor::ReadbackYUVInterface>
       yuv_readback_pipeline_;
 
   std::unique_ptr<DelegatedFrameEvictor> delegated_frame_evictor_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_DELEGATED_FRAME_HOST_H_