Content API changes to improve DOM stitching in ThreatDetails code.

content/renderer/web_frame_utils.cc

Index: content/renderer/web_frame_utils.cc
diff --git a/content/renderer/web_frame_utils.cc b/content/renderer/web_frame_utils.cc
index c1ada0520f8cb7ca55dd3337ea82edd33cbb7c1b..cf07d9848ca5ce49b1f58dbff261e5f1fc3b9df6 100644
--- a/content/renderer/web_frame_utils.cc
+++ b/content/renderer/web_frame_utils.cc
@@ -13,14 +13,6 @@
 
 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)