content: Remove Lock/Unlock CompositingSurface API from RWH.

content/browser/frame_host/render_widget_host_view_child_frame.cc

 // 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.
 
 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 285 matching lines @@
   host_->SetView(nullptr);
   host_ = nullptr;
   base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, this);
 }
 
 void RenderWidgetHostViewChildFrame::SetTooltipText(
     const base::string16& tooltip_text) {
   frame_connector_->GetRootRenderWidgetHostView()->SetTooltipText(tooltip_text);
 }
 
-void RenderWidgetHostViewChildFrame::LockCompositingSurface() {
-  NOTIMPLEMENTED();
-}
-
-void RenderWidgetHostViewChildFrame::UnlockCompositingSurface() {
-  NOTIMPLEMENTED();
-}
-
 RenderWidgetHostViewBase* RenderWidgetHostViewChildFrame::GetParentView() {
   if (!frame_connector_)
     return nullptr;
   return frame_connector_->GetParentRenderWidgetHostView();
 }
 
 void RenderWidgetHostViewChildFrame::RegisterFrameSinkId() {
   // If Destroy() has been called before we get here, host_ may be null.
   if (host_ && host_->delegate() && host_->delegate()->GetInputEventRouter()) {
     RenderWidgetHostInputEventRouter* router =
@@ skipping 432 matching lines @@
 
 bool RenderWidgetHostViewChildFrame::IsChildFrameForTesting() const {
   return true;
 }
 
 cc::SurfaceId RenderWidgetHostViewChildFrame::SurfaceIdForTesting() const {
   return cc::SurfaceId(frame_sink_id_, local_surface_id_);
 };
 
 }  // namespace content