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

chrome/browser/supervised_user/child_accounts/family_info_fetcher_unittest.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 <string>
 #include <vector>
 
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 31 matching lines @@
 std::string BuildGetFamilyProfileResponse(
     const FamilyInfoFetcher::FamilyProfile& family) {
   base::DictionaryValue dict;
   base::DictionaryValue* family_dict = new base::DictionaryValue;
   family_dict->SetStringWithoutPathExpansion("familyId", family.id);
   base::DictionaryValue* profile_dict = new base::DictionaryValue;
   profile_dict->SetStringWithoutPathExpansion("name", family.name);
   family_dict->SetWithoutPathExpansion("profile", profile_dict);
   dict.SetWithoutPathExpansion("family", family_dict);
   std::string result;
-  base::JSONWriter::Write(&dict, &result);
+  base::JSONWriter::Write(dict, &result);
   return result;
 }
 
 std::string BuildEmptyGetFamilyProfileResponse() {
   base::DictionaryValue dict;
   base::DictionaryValue* family_dict = new base::DictionaryValue;
   dict.SetWithoutPathExpansion("family", family_dict);
   std::string result;
-  base::JSONWriter::Write(&dict, &result);
+  base::JSONWriter::Write(dict, &result);
   return result;
 }
 
 std::string BuildGetFamilyMembersResponse(
     const std::vector<FamilyInfoFetcher::FamilyMember>& members) {
   base::DictionaryValue dict;
   base::ListValue* list = new base::ListValue;
   for (size_t i = 0; i < members.size(); i++) {
     const FamilyInfoFetcher::FamilyMember& member = members[i];
     base::DictionaryValue* member_dict = new base::DictionaryValue;
@@ skipping 18 matching lines @@
       if (!member.profile_image_url.empty())
         profile_dict->SetStringWithoutPathExpansion("profileImageUrl",
                                                     member.profile_image_url);
 
       member_dict->SetWithoutPathExpansion("profile", profile_dict);
     }
     list->Append(member_dict);
   }
   dict.SetWithoutPathExpansion("members", list);
   std::string result;
-  base::JSONWriter::Write(&dict, &result);
+  base::JSONWriter::Write(dict, &result);
   return result;
 }
 
 } // namespace
 
 class FamilyInfoFetcherTest : public testing::Test,
                               public FamilyInfoFetcher::Consumer {
  public:
   FamilyInfoFetcherTest()
       : request_context_(new net::TestURLRequestContextGetter(
@@ skipping 201 matching lines @@
   IssueRefreshToken();
 
   fetcher_.StartGetFamilyProfile();
 
   IssueAccessToken();
 
   // Failed API call should result in a network error.
   EXPECT_CALL(*this, OnFailure(FamilyInfoFetcher::NETWORK_ERROR));
   SendFailedResponse();
 }