Switch DomAutomationController to be a RenderFrameObserver.

content/browser/frame_host/render_frame_host_delegate.h

Index: content/browser/frame_host/render_frame_host_delegate.h
diff --git a/content/browser/frame_host/render_frame_host_delegate.h b/content/browser/frame_host/render_frame_host_delegate.h
index b23223eb2ab40cf96a00d2f45ab88862a6a8a903..a4fa7391481827e1e8e3571d5a53fa0b612c86a8 100644
--- a/content/browser/frame_host/render_frame_host_delegate.h
+++ b/content/browser/frame_host/render_frame_host_delegate.h
@@ -14,6 +14,7 @@ class Message;
 namespace content {
 class RenderFrameHost;
 class WebContents;
+struct DomOperationNotificationDetails;
 struct ContextMenuParams;
 
 // An interface implemented by an object interested in knowing about the state
@@ -38,6 +39,11 @@ class CONTENT_EXPORT RenderFrameHostDelegate {
   virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
                                const ContextMenuParams& params) {}
 
+  // A notification that the JavaScript running in the renderer has sent a value
+  // back to the browser using the DomAutomationController.
+  virtual void OnDomOperationResponse(
+      const DomOperationNotificationDetails& details) {}
+
   // Return this object cast to a WebContents, if it is one. If the object is
   // not a WebContents, returns NULL.
   virtual WebContents* GetAsWebContents();