Convert JsonWriter::Write to taking a const ref for the in-param

chrome/browser/extensions/extension_messages_apitest.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 "base/base64.h"
 #include "base/files/file_path.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 976 matching lines @@
             base::Unretained(&channel_id_cert),
             base::Unretained(&request_handle),
             request_context_getter));
     tls_channel_id_created_.Wait();
     // Create the expected value.
     base::StringPiece spki;
     net::asn1::ExtractSPKIFromDERCert(channel_id_cert, &spki);
     base::DictionaryValue jwk_value;
     net::JwkSerializer::ConvertSpkiFromDerToJwk(spki, &jwk_value);
     std::string tls_channel_id_value;
-    base::JSONWriter::Write(&jwk_value, &tls_channel_id_value);
+    base::JSONWriter::Write(jwk_value, &tls_channel_id_value);
     return tls_channel_id_value;
   }
 
  private:
   void CreateDomainBoundCertOnIOThread(
       std::string* channel_id_private_key,
       std::string* channel_id_cert,
       net::ChannelIDService::RequestHandle* request_handle,
       scoped_refptr<net::URLRequestContextGetter> request_context_getter) {
     DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
@@ skipping 192 matching lines @@
   ui_test_utils::NavigateToURL(browser(), chromium_org_url());
   EXPECT_EQ(COULD_NOT_ESTABLISH_CONNECTION_ERROR,
             CanConnectAndSendMessagesToMainFrame(invalid.get()));
 }
 
 #endif  // !defined(OS_WIN) - http://crbug.com/350517.
 
 }  // namespace
 
 };  // namespace extensions