Content API changes to improve DOM stitching in ThreatDetails code.

content/renderer/web_frame_utils.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/renderer/web_frame_utils.h"
 
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_frame_proxy.h"
 #include "ipc/ipc_message.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebRemoteFrame.h"
 
 namespace content {
 
-int GetRoutingIdForFrameOrProxy(blink::WebFrame* web_frame) {
-  if (!web_frame)
-    return MSG_ROUTING_NONE;
-  if (web_frame->IsWebRemoteFrame())
-    return RenderFrameProxy::FromWebFrame(web_frame)->routing_id();
-  return RenderFrameImpl::FromWebFrame(web_frame)->GetRoutingID();
-}
-
 blink::WebFrame* GetWebFrameFromRoutingIdForFrameOrProxy(int routing_id) {
   auto* render_frame = RenderFrameImpl::FromRoutingID(routing_id);
   if (render_frame)
     return render_frame->GetWebFrame();
 
   auto* render_frame_proxy = RenderFrameProxy::FromRoutingID(routing_id);
   if (render_frame_proxy)
     return render_frame_proxy->web_frame();
 
   return nullptr;
 }
 
 }  // namespace content