Add support for WebURLRequest::TargetIsXHR (part I)

content/browser/renderer_host/resource_dispatcher_host.cc

 // Copyright (c) 2011 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.
 
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
 
 #include <set>
 #include <vector>
@@ skipping 2010 matching lines @@
 
     // Sub resources, objects and media are lower priority than potentially
     // blocking stylesheets, scripts and fonts, but are higher priority than
     // images because if they exist they are probably more central to the page
     // focus than images on the page.
     case ResourceType::SUB_RESOURCE:
     case ResourceType::OBJECT:
     case ResourceType::MEDIA:
     case ResourceType::WORKER:
     case ResourceType::SHARED_WORKER:
+    case ResourceType::XHR:
       return net::LOW;
 
     // Images are the "lowest" priority because they typically do not block
     // downloads or rendering and most pages have some useful content without
     // them.
     case ResourceType::IMAGE:
     // Favicons aren't required for rendering the current page, but
     // are user visible.
     case ResourceType::FAVICON:
       return net::LOWEST;
@@ skipping 42 matching lines @@
   return HTTP_AUTH_RESOURCE_BLOCKED_CROSS;
 }
 
 bool ResourceDispatcherHost::allow_cross_origin_auth_prompt() {
   return allow_cross_origin_auth_prompt_;
 }
 
 void ResourceDispatcherHost::set_allow_cross_origin_auth_prompt(bool value) {
   allow_cross_origin_auth_prompt_ = value;
 }