<webview>: Cleanup WebRequest event listeners when embedder destroyed

chrome/browser/guestview/guestview.h

Index: chrome/browser/guestview/guestview.h
diff --git a/chrome/browser/guestview/guestview.h b/chrome/browser/guestview/guestview.h
index b83dbfd75cca765091dfeb9d011eb5efaadaed65..09b8efc7fbd3bbf20bdbfddfa06b671565f735ea 100644
--- a/chrome/browser/guestview/guestview.h
+++ b/chrome/browser/guestview/guestview.h
@@ -85,9 +85,6 @@ class GuestView : public content::BrowserPluginGuestDelegate {
   // Returns the embedder's process ID.
   int embedder_render_process_id() const { return embedder_render_process_id_; }
 
-  // Returns the embedder's routing ID.
-  int embedder_routing_id() const { return embedder_routing_id_; }
-
  protected:
   virtual ~GuestView();
 
@@ -101,7 +98,6 @@ class GuestView : public content::BrowserPluginGuestDelegate {
   content::WebContents* embedder_web_contents_;
   std::string extension_id_;
   int embedder_render_process_id_;
-  int embedder_routing_id_;
   content::BrowserContext* browser_context_;
   // |guest_instance_id_| is a profile-wide unique identifier for a guest
   // WebContents.