Adds BeginFrameControl via DevTools.

content/browser/web_contents/web_contents_view_mus.cc

 // Copyright 2015 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/web_contents/web_contents_view_mus.h"
 
 #include "build/build_config.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_mus.h"
 #include "content/browser/web_contents/web_contents_impl.h"
@@ skipping 135 matching lines @@
 void WebContentsViewMus::RenderViewCreated(RenderViewHost* host) {
 }
 
 void WebContentsViewMus::RenderViewSwappedIn(RenderViewHost* host) {
 }
 
 void WebContentsViewMus::SetOverscrollControllerEnabled(bool enabled) {
   // This should never override the setting of the embedder view.
 }
 
+ui::Compositor* WebContentsViewMus::GetCompositor() const {
+  return nullptr;
+}
+
 #if defined(OS_MACOSX)
 bool WebContentsViewMus::IsEventTracking() const {
   return false;
 }
 
 void WebContentsViewMus::CloseTabAfterEventTracking() {}
 #endif
 
 WebContents* WebContentsViewMus::web_contents() {
   return web_contents_;
@@ skipping 94 matching lines @@
 
 void WebContentsViewMus::OnWindowTargetVisibilityChanged(bool visible) {}
 
 bool WebContentsViewMus::HasHitTestMask() const {
   return false;
 }
 
 void WebContentsViewMus::GetHitTestMask(gfx::Path* mask) const {}
 
 }  // namespace content