content: Remove Lock/Unlock CompositingSurface API from RWH.

content/browser/renderer_host/render_widget_host_view_android.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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 128 matching lines @@
   void ClearCompositorFrame() override;
   void SetIsInVR(bool is_in_vr) override;
   bool IsInVR() const override;
   void DidOverscroll(const ui::DidOverscrollParams& params) override;
   void DidStopFlinging() override;
   cc::FrameSinkId GetFrameSinkId() override;
   void ShowDisambiguationPopup(const gfx::Rect& rect_pixels,
                                const SkBitmap& zoomed_bitmap) override;
   std::unique_ptr<SyntheticGestureTarget> CreateSyntheticGestureTarget()
       override;
-  void LockCompositingSurface() override;
-  void UnlockCompositingSurface() override;
   void OnDidNavigateMainFrameToNewPage() override;
   void SetNeedsBeginFrames(bool needs_begin_frames) override;
 
   // ui::GestureProviderClient implementation.
   void OnGestureEvent(const ui::GestureEventData& gesture) override;
 
   // ui::WindowAndroidObserver implementation.
   void OnCompositingDidCommit() override {}
   void OnRootWindowVisibilityChanged(bool visible) override;
   void OnAttachCompositor() override;
@@ skipping 111 matching lines @@
   void RemoveLayers();
 
   void UpdateBackgroundColor(SkColor color);
 
   // DevTools ScreenCast support for Android WebView.
   void SynchronousCopyContents(const gfx::Rect& src_subrect_in_pixel,
                                const gfx::Size& dst_size_in_pixel,
                                const ReadbackRequestCallback& callback,
                                const SkColorType color_type);
 
-  // If we have locks on a frame during a ContentViewCore swap or a context
-  // lost, the frame is no longer valid and we can safely release all the locks.
-  // Use this method to release all the locks.
-  void ReleaseLocksOnSurface();
-
   // Drop any incoming frames from the renderer when there are locks on the
   // current frame.
   void RetainFrame(uint32_t compositor_frame_sink_id,
                    cc::CompositorFrame frame);
 
   void InternalSwapCompositorFrame(uint32_t compositor_frame_sink_id,
                                    cc::CompositorFrame frame);
   void DestroyDelegatedContent();
   void OnLostResources();
 
@@ skipping 77 matching lines @@
   // Bounds to use if we have no backing ContentViewCore
   gfx::Rect default_bounds_;
 
   const bool using_browser_compositor_;
   std::unique_ptr<SynchronousCompositorHost> sync_compositor_;
 
   SynchronousCompositorClient* synchronous_compositor_client_;
 
   std::unique_ptr<DelegatedFrameEvictor> frame_evictor_;
 
-  size_t locks_on_frame_count_;
   bool observing_root_window_;
 
-  struct LastFrameInfo {
-    LastFrameInfo(uint32_t compositor_frame_sink_id,
-                  cc::CompositorFrame output_frame);
-    ~LastFrameInfo();
-    uint32_t compositor_frame_sink_id;
-    cc::CompositorFrame frame;
-  };
-
-  std::unique_ptr<LastFrameInfo> last_frame_info_;
-
   // The last scroll offset of the view.
   gfx::Vector2dF last_scroll_offset_;
 
   base::WeakPtrFactory<RenderWidgetHostViewAndroid> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_