Content API changes to improve DOM stitching in ThreatDetails code.

content/public/renderer/render_frame.h

Index: content/public/renderer/render_frame.h
diff --git a/content/public/renderer/render_frame.h b/content/public/renderer/render_frame.h
index 68992bd43234af805b06887c111fa2f15a2d35f2..92b2e6b8ecd91c512621f0ac7616649185c509ff 100644
--- a/content/public/renderer/render_frame.h
+++ b/content/public/renderer/render_frame.h
@@ -102,6 +102,8 @@ class CONTENT_EXPORT RenderFrame : public IPC::Listener,
   // Visit all live RenderFrames.
   static void ForEach(RenderFrameVisitor* visitor);
 
+  static int GetRoutingIdForWebFrame(blink::WebFrame* web_frame);

[Charlie Reis, 2017/05/05 21:03:08]

Please add a comment.  Note that it's easier to talk about remote frames in the
renderer process than the browser process.  Something like:

Returns the routing ID for |web_frame|, whether it is a WebLocalFrame in this
process or a WebRemoteFrame placeholder for a frame in a different process.

[lpz, 2017/05/10 14:21:10]

Done.

+
   // Returns the RenderView associated with this frame.
   virtual RenderView* GetRenderView() = 0;