Use a hosted app's opener URL and not its origin to locate it.

chrome/browser/chrome_content_browser_client.cc

 // Copyright (c) 2012 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 "chrome/browser/chrome_content_browser_client.h"
 
 #include <set>
 #include <utility>
 #include <vector>
 
@@ skipping 1217 matching lines @@
   DesktopNotificationService* service =
       DesktopNotificationServiceFactory::GetForProfile(profile);
   service->CancelDesktopNotification(
       render_process_id, render_view_id, notification_id);
 #else
   NOTIMPLEMENTED();
 #endif
 }
 
 bool ChromeContentBrowserClient::CanCreateWindow(
+    const GURL& opener_url,
     const GURL& source_origin,
     WindowContainerType container_type,
     content::ResourceContext* context,
     int render_process_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   // If the opener is trying to create a background window but doesn't have
   // the appropriate permission, fail the attempt.
   if (container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
     ProfileIOData* io_data = ProfileIOData::FromResourceContext(context);
     ExtensionInfoMap* map = io_data->GetExtensionInfoMap();
 
     // If the opener is not allowed to script its background window, then return
     // false so that the window.open call returns null.  In this case, only
     // the manifest is permitted to create a background window.
     // Note: this use of GetExtensionOrAppByURL is safe but imperfect.  It may
     // return a recently installed Extension even if this CanCreateWindow call
     // was made by an old copy of the page in a normal web process.  That's ok,
-    // because the permission check below will still fail.
+    // because the permission check below will still fail.  We must use the
+    // full URL to find hosted apps, though, and not just the origin.
     const Extension* extension = map->extensions().GetExtensionOrAppByURL(
-        ExtensionURLInfo(source_origin));
+        ExtensionURLInfo(opener_url));
     if (extension && !extension->allow_background_js_access())
       return false;
 
     return map->SecurityOriginHasAPIPermission(
         source_origin, render_process_id, ExtensionAPIPermission::kBackground);
   }
   return true;
 }
 
 std::string ChromeContentBrowserClient::GetWorkerProcessTitle(
@@ skipping 320 matching lines @@
 #if defined(USE_NSS)
 crypto::CryptoModuleBlockingPasswordDelegate*
     ChromeContentBrowserClient::GetCryptoPasswordDelegate(
         const GURL& url) {
   return browser::NewCryptoModuleBlockingDialogDelegate(
       browser::kCryptoModulePasswordKeygen, url.host());
 }
 #endif
 
 }  // namespace chrome