Allow navigations performed by extensions to pass through AllowExtensionResourceLoad.

chrome/browser/extensions/extension_protocols.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/extensions/extension_protocols.h"
 
 #include <algorithm>
 
 #include "base/base64.h"
 #include "base/compiler_specific.h"
@@ skipping 367 matching lines @@
   bool is_guest = renderer_state->GetWebViewInfo(info->GetChildID(),
                                                  info->GetRouteID(),
                                                  &webview_info);
   std::string resource_path = request->url().path();
   if (is_guest && webview_info.allow_chrome_extension_urls &&
       extensions::WebviewInfo::IsResourceWebviewAccessible(
             extension, webview_info.partition_id, resource_path)) {
     return true;
   }
 
+  // If the request is for navigations outside of webviews, then it should be
+  // allowed. The navigation logic in CrossSiteResourceHandler will properly
+  // transfer the navigation to a privileged process before it commits.
+  if (ResourceType::IsFrame(info->GetResourceType()) && !is_guest)
+    return true;
+
   if (!content::PageTransitionIsWebTriggerable(info->GetPageTransition()))
     return false;
 
   // The following checks require that we have an actual extension object. If we
   // don't have it, allow the request handling to continue with the rest of the
   // checks.
   if (!extension)
     return true;
 
   // Disallow loading of packaged resources for hosted apps. We don't allow
@@ skipping 191 matching lines @@
                                     send_cors_header);
 }
 
 }  // namespace
 
 net::URLRequestJobFactory::ProtocolHandler* CreateExtensionProtocolHandler(
     bool is_incognito,
     ExtensionInfoMap* extension_info_map) {
   return new ExtensionProtocolHandler(is_incognito, extension_info_map);
 }