content: Remove Lock/Unlock CompositingSurface API from RWH.

content/browser/frame_host/render_widget_host_view_guest.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_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 98 matching lines @@
 #if defined(OS_MACOSX)
   // RenderWidgetHostView implementation.
   void SetActive(bool active) override;
   void ShowDefinitionForSelection() override;
   bool SupportsSpeech() const override;
   void SpeakSelection() override;
   bool IsSpeaking() const override;
   void StopSpeaking() override;
 #endif  // defined(OS_MACOSX)
 
-  void LockCompositingSurface() override;
-  void UnlockCompositingSurface() override;
-
   void WheelEventAck(const blink::WebMouseWheelEvent& event,
                      InputEventAckState ack_result) override;
 
   void GestureEventAck(const blink::WebGestureEvent& event,
                        InputEventAckState ack_result) override;
 
   bool IsRenderWidgetHostViewGuest() override;
   RenderWidgetHostViewBase* GetOwnerRenderWidgetHostView() const;
 
  protected:
@@ skipping 32 matching lines @@
   // The platform view for this RenderWidgetHostView.
   // RenderWidgetHostViewGuest mostly only cares about stuff related to
   // compositing, the rest are directly forwarded to this |platform_view_|.
   base::WeakPtr<RenderWidgetHostViewBase> platform_view_;
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewGuest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_GUEST_H_