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

chrome/browser/ui/webui/options/sync_setup_handler_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 "chrome/browser/ui/webui/options/sync_setup_handler.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
@@ skipping 75 matching lines @@
   result.SetBoolean("bookmarksSynced", types.Has(syncer::BOOKMARKS));
   result.SetBoolean("extensionsSynced", types.Has(syncer::EXTENSIONS));
   result.SetBoolean("passwordsSynced", types.Has(syncer::PASSWORDS));
   result.SetBoolean("preferencesSynced", types.Has(syncer::PREFERENCES));
   result.SetBoolean("tabsSynced", types.Has(syncer::PROXY_TABS));
   result.SetBoolean("themesSynced", types.Has(syncer::THEMES));
   result.SetBoolean("typedUrlsSynced", types.Has(syncer::TYPED_URLS));
   result.SetBoolean("wifiCredentialsSynced",
                     types.Has(syncer::WIFI_CREDENTIALS));
   std::string args;
-  base::JSONWriter::Write(&result, &args);
+  base::JSONWriter::Write(result, &args);
   return args;
 }
 
 // Checks whether the passed |dictionary| contains a |key| with the given
 // |expected_value|. If |omit_if_false| is true, then the value should only
 // be present if |expected_value| is true.
 void CheckBool(const base::DictionaryValue* dictionary,
                const std::string& key,
                bool expected_value,
                bool omit_if_false) {
@@ skipping 977 matching lines @@
       WillRepeatedly(Return(false));
   EXPECT_CALL(*mock_pss_, EnableEncryptEverything()).Times(0);
   EXPECT_CALL(*mock_pss_, OnUserChoseDatatypes(true, _));
   handler_->HandleConfigure(&list_args);
 
   // Ensure that we navigated to the "done" state since we don't need a
   // passphrase.
   ExpectDone();
 }