DelegatedFrameHost should not create an ExternalBeginFrameSource

content/browser/renderer_host/delegated_frame_host_client_aura.cc

 // Copyright 2016 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/renderer_host/delegated_frame_host_client_aura.h"
 
 #include "content/browser/renderer_host/compositor_resize_lock_aura.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 #include "content/common/view_messages.h"
@@ skipping 77 matching lines @@
 void DelegatedFrameHostClientAura::
     DelegatedFrameHostSendReclaimCompositorResources(
         int compositor_frame_sink_id,
         bool is_swap_ack,
         const cc::ReturnedResourceArray& resources) {
   render_widget_host_view_->host_->Send(new ViewMsg_ReclaimCompositorResources(
       render_widget_host_view_->host_->GetRoutingID(), compositor_frame_sink_id,
       is_swap_ack, resources));
 }
 
-void DelegatedFrameHostClientAura::SetBeginFrameSource(
-    cc::BeginFrameSource* source) {
-  if (render_widget_host_view_->begin_frame_source_ &&
-      render_widget_host_view_->added_frame_observer_) {
-    render_widget_host_view_->begin_frame_source_->RemoveObserver(
-        render_widget_host_view_);
-    render_widget_host_view_->added_frame_observer_ = false;
-  }
-  render_widget_host_view_->begin_frame_source_ = source;
-  render_widget_host_view_->UpdateNeedsBeginFramesInternal();
+void DelegatedFrameHostClientAura::OnBeginFrame(
+    const cc::BeginFrameArgs& args) {
+  render_widget_host_view_->OnBeginFrame(args);
 }
 
 bool DelegatedFrameHostClientAura::IsAutoResizeEnabled() const {
   return render_widget_host_view_->host_->auto_resize_enabled();
 }
 
 }  // namespace content