<webview>: Make contentWindow available prior to attachment (on display:none).

extensions/browser/api/guest_view/guest_view_internal_api.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/api/guest_view/guest_view_internal_api.h"
 
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "extensions/browser/guest_view/guest_view_base.h"
 #include "extensions/browser/guest_view/guest_view_manager.h"
 #include "extensions/common/api/guest_view_internal.h"
+#include "extensions/common/guest_view/guest_view_constants.h"
 #include "extensions/common/permissions/permissions_data.h"
 
 namespace guest_view_internal = extensions::core_api::guest_view_internal;
 
 namespace extensions {
 
 GuestViewInternalCreateGuestFunction::
     GuestViewInternalCreateGuestFunction() {
 }
 
@@ skipping 20 matching lines @@
   guest_view_manager->CreateGuest(view_type,
                                   sender_web_contents,
                                   *create_params,
                                   callback);
   return true;
 }
 
 void GuestViewInternalCreateGuestFunction::CreateGuestCallback(
     content::WebContents* guest_web_contents) {
   int guest_instance_id = 0;
+  int content_window_id = MSG_ROUTING_NONE;
   if (guest_web_contents) {
     GuestViewBase* guest = GuestViewBase::FromWebContents(guest_web_contents);
     guest_instance_id = guest->guest_instance_id();
+    content_window_id = guest->proxy_host()->GetGuestProxyRoutingID();
   }
-  SetResult(new base::FundamentalValue(guest_instance_id));
+  scoped_ptr<base::DictionaryValue> return_params(new base::DictionaryValue());
+  return_params->SetInteger(guestview::kID, guest_instance_id);
+  return_params->SetInteger(guestview::kContentWindowID, content_window_id);
+  SetResult(return_params.release());
   SendResponse(true);
 }
 
 GuestViewInternalDestroyGuestFunction::
     GuestViewInternalDestroyGuestFunction() {
 }
 
 GuestViewInternalDestroyGuestFunction::
     ~GuestViewInternalDestroyGuestFunction() {
 }
@@ skipping 43 matching lines @@
     set_size_params.normal_size.reset(new gfx::Size(
         params->params.normal->width, params->params.normal->height));
   }
 
   guest->SetSize(set_size_params);
   SendResponse(true);
   return true;
 }
 
 }  // namespace extensions