<webview>: Cleanup WebRequest event listeners when embedder destroyed

chrome/browser/guestview/guestview.cc

Index: chrome/browser/guestview/guestview.cc
diff --git a/chrome/browser/guestview/guestview.cc b/chrome/browser/guestview/guestview.cc
index 9f3ab44d9cd979f2f5e6c696ba5f093296187cbc..414962ecdbef333d74816307ab06a8d37256f808 100644
--- a/chrome/browser/guestview/guestview.cc
+++ b/chrome/browser/guestview/guestview.cc
@@ -43,7 +43,6 @@ GuestView::GuestView(WebContents* guest_web_contents)
     : guest_web_contents_(guest_web_contents),
       embedder_web_contents_(NULL),
       embedder_render_process_id_(0),
-      embedder_routing_id_(MSG_ROUTING_NONE),
       browser_context_(guest_web_contents->GetBrowserContext()),
       guest_instance_id_(guest_web_contents->GetEmbeddedInstanceID()),
       view_instance_id_(guestview::kInstanceIDNone) {
@@ -72,7 +71,6 @@ void GuestView::Attach(content::WebContents* embedder_web_contents,
   embedder_web_contents_ = embedder_web_contents;
   embedder_render_process_id_ =
       embedder_web_contents->GetRenderProcessHost()->GetID();
-  embedder_routing_id_ = embedder_web_contents->GetRoutingID();
   extension_id_ = extension_id;
   args.GetInteger(guestview::kParameterInstanceId, &view_instance_id_);