Pipe the devTools FrameId from blink into the browser for headless

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 54cf8735735cf6006568e5e38315d876e90b1ded..b3ec1de583bbd3c416d6af26e446153ed841b770 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -3307,6 +3307,12 @@ void RenderFrameImpl::SetHasReceivedUserGesture() {
   Send(new FrameHostMsg_SetHasReceivedUserGesture(routing_id_));
 }
 
+void RenderFrameImpl::SetDevToolsFrameId(
+    const blink::WebString& devtools_frame_id) {
+  Send(new FrameHostMsg_SetDevToolsFrameId(routing_id_,
+                                           devtools_frame_id.Utf8()));
+}
+
 bool RenderFrameImpl::ShouldReportDetailedMessageForSource(
     const blink::WebString& source) {
   return GetContentClient()->renderer()->ShouldReportDetailedMessageForSource(