[NoStatePrefetch] Do not send responses to renderer in prefetch mode.

content/child/web_url_request_util.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 "content/child/web_url_request_util.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/strings/string_util.h"
+#include "content/child/request_extra_data.h"
 #include "net/base/load_flags.h"
 #include "net/base/net_errors.h"
 #include "third_party/WebKit/public/platform/FilePathConversion.h"
 #include "third_party/WebKit/public/platform/WebCachePolicy.h"
 #include "third_party/WebKit/public/platform/WebData.h"
 #include "third_party/WebKit/public/platform/WebHTTPHeaderVisitor.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebURLError.h"
 #include "third_party/WebKit/public/platform/WebURLRequest.h"
@@ skipping 185 matching lines @@
   }
 
   if (!request.allowStoredCredentials()) {
     load_flags |= net::LOAD_DO_NOT_SAVE_COOKIES;
     load_flags |= net::LOAD_DO_NOT_SEND_COOKIES;
   }
 
   if (!request.allowStoredCredentials())
     load_flags |= net::LOAD_DO_NOT_SEND_AUTH_DATA;
 
+  if (request.getExtraData()) {
+    RequestExtraData* extra_data =
+        static_cast<RequestExtraData*>(request.getExtraData());
+    if (extra_data->is_prefetch())
+      load_flags |= net::LOAD_PREFETCH;
+  }
+
   return load_flags;
 }
 
 WebHTTPBody GetWebHTTPBodyForRequestBody(
     const scoped_refptr<ResourceRequestBodyImpl>& input) {
   WebHTTPBody http_body;
   http_body.initialize();
   http_body.setIdentifier(input->identifier());
   for (const auto& element : *input->elements()) {
     switch (element.type()) {
@@ skipping 263 matching lines @@
                                      bool stale_copy_in_cache,
                                      int reason,
                                      bool was_ignored_by_handler) {
   blink::WebURLError error =
       CreateWebURLError(unreachable_url, stale_copy_in_cache, reason);
   error.wasIgnoredByHandler = was_ignored_by_handler;
   return error;
 }
 
 }  // namespace content