Refactor GuestViewContainer::AttachRequest to allow for other request types

extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc

Index: extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
diff --git a/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc b/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
index 69f70e84fe35a09534a279063771d5a0e934e2f6..86ba4ed9f19d68e5feb918afa49f274964795c2a 100644
--- a/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
+++ b/extensions/renderer/guest_view/guest_view_internal_custom_bindings.cc
@@ -44,8 +44,7 @@ void GuestViewInternalCustomBindings::AttachGuest(
   // An element instance ID uniquely identifies a ExtensionsGuestViewContainer
   // within a RenderView.
   ExtensionsGuestViewContainer* guest_view_container =
-      ExtensionsGuestViewContainer::FromID(
-          context()->GetRenderView()->GetRoutingID(), element_instance_id);
+      ExtensionsGuestViewContainer::FromID(element_instance_id);
 
   // TODO(fsamuel): Should we be reporting an error if the element instance ID
   // is invalid?
@@ -64,15 +63,15 @@ void GuestViewInternalCustomBindings::AttachGuest(
         static_cast<base::DictionaryValue*>(params_as_value.release()));
   }
 
-  linked_ptr<ExtensionsGuestViewContainer::AttachRequest> request(
+  linked_ptr<ExtensionsGuestViewContainer::Request> request(
       new ExtensionsGuestViewContainer::AttachRequest(
-          element_instance_id,
+          guest_view_container,
           guest_instance_id,
           params.Pass(),
           args.Length() == 4 ? args[3].As<v8::Function>() :
               v8::Handle<v8::Function>(),
           args.GetIsolate()));
-  guest_view_container->AttachGuest(request);
+  guest_view_container->IssueRequest(request);
 
   args.GetReturnValue().Set(v8::Boolean::New(context()->isolate(), true));
 }