Support both preconnection, and pre-resolution for subresources...

chrome/browser/renderer_host/resource_dispatcher_host.cc

 // Copyright (c) 2010 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 "chrome/browser/renderer_host/resource_dispatcher_host.h"
 
 #include <vector>
 
@@ skipping 407 matching lines @@
   request->set_referrer(CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kNoReferrers) ? std::string() : request_data.referrer.spec());
   net::HttpRequestHeaders headers;
   headers.AddHeadersFromString(request_data.headers);
   request->SetExtraRequestHeaders(headers);
 
   int load_flags = request_data.load_flags;
   // EV certificate verification could be expensive.  We don't want to spend
   // time performing EV certificate verification on all resources because
   // EV status is irrelevant to sub-frames and sub-resources.
-  if (request_data.resource_type == ResourceType::MAIN_FRAME)
-    load_flags |= net::LOAD_VERIFY_EV_CERT;
+  if (request_data.resource_type == ResourceType::MAIN_FRAME) {
+    load_flags |= net::LOAD_VERIFY_EV_CERT | net::LOAD_MAIN_FRAME;
+  } else if (request_data.resource_type == ResourceType::SUB_FRAME) {
+    load_flags |= net::LOAD_SUB_FRAME;
+  }
   request->set_load_flags(load_flags);
   request->set_context(context);
   request->set_priority(DetermineRequestPriority(request_data.resource_type));
 
   // Set upload data.
   uint64 upload_size = 0;
   if (request_data.upload_data) {
     request->set_upload(request_data.upload_data);
     upload_size = request_data.upload_data->GetContentLength();
   }
@@ skipping 1399 matching lines @@
     // them.
     case ResourceType::IMAGE:
       return net::LOWEST;
 
     default:
       // When new resource types are added, their priority must be considered.
       NOTREACHED();
       return net::LOW;
   }
 }