Use content::Referrer to pass around referrers in the plugin code

content/child/resource_dispatcher_unittest.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 <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
@@ skipping 304 matching lines @@
   }
 
   ResourceDispatcher* dispatcher() { return &dispatcher_; }
 
  private:
   ResourceLoaderBridge* CreateBridgeInternal(bool download_to_file) {
     RequestInfo request_info;
     request_info.method = "GET";
     request_info.url = GURL(kTestPageUrl);
     request_info.first_party_for_cookies = GURL(kTestPageUrl);
-    request_info.referrer = GURL();
+    request_info.referrer = Referrer();
     request_info.headers = std::string();
     request_info.load_flags = 0;
     request_info.requestor_pid = 0;
     request_info.request_type = RESOURCE_TYPE_SUB_RESOURCE;
     request_info.appcache_host_id = kAppCacheNoHostId;
     request_info.routing_id = 0;
     request_info.download_to_file = download_to_file;
     RequestExtraData extra_data;
     request_info.extra_data = &extra_data;
 
@@ skipping 445 matching lines @@
   ResourceResponseHead response_head;
 
   PerformTest(response_head);
 
   EXPECT_EQ(base::TimeTicks(), response_info().load_timing.request_start);
   EXPECT_EQ(base::TimeTicks(),
             response_info().load_timing.connect_timing.dns_start);
 }
 
 }  // namespace content