Content API changes to improve DOM stitching in ThreatDetails code.

content/browser/frame_host/render_frame_proxy_host.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_frame_proxy_host.h"
 
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "content/browser/bad_message.h"
@@ skipping 92 matching lines @@
   GetProcess()->RemoveRoute(routing_id_);
   g_routing_id_frame_proxy_map.Get().erase(
       RenderFrameProxyHostID(GetProcess()->GetID(), routing_id_));
 }
 
 void RenderFrameProxyHost::SetChildRWHView(RenderWidgetHostView* view) {
   cross_process_frame_connector_->set_view(
       static_cast<RenderWidgetHostViewChildFrame*>(view));
 }
 
+int RenderFrameProxyHost::GetFrameTreeNodeId() const {
+  return frame_tree_node_->frame_tree_node_id();
+}
+
 RenderViewHostImpl* RenderFrameProxyHost::GetRenderViewHost() {
   return frame_tree_node_->frame_tree()->GetRenderViewHost(
       site_instance_.get());
 }
 
 RenderWidgetHostView* RenderFrameProxyHost::GetRenderWidgetHostView() {
   return frame_tree_node_->parent()->render_manager()
       ->GetRenderWidgetHostView();
 }
 
@@ skipping 223 matching lines @@
 
   target_rfh->AdvanceFocus(type, source_proxy);
 }
 
 void RenderFrameProxyHost::OnFrameFocused() {
   frame_tree_node_->current_frame_host()->delegate()->SetFocusedFrame(
       frame_tree_node_, GetSiteInstance());
 }
 
 }  // namespace content