Continue to clean c_str() calls.

chrome/browser/supervised_user/experimental/safe_search_url_reporter.cc

 // Copyright 2016 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/supervised_user/experimental/safe_search_url_reporter.h"
 
 #include "base/callback.h"
 #include "base/json/json_writer.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 131 matching lines @@
       (*it)->url_fetcher.get(),
       data_use_measurement::DataUseUserData::SUPERVISED_USER);
   (*it)->url_fetcher->SetRequestContext(context_);
   (*it)->url_fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
                                    net::LOAD_DO_NOT_SAVE_COOKIES);
   (*it)->url_fetcher->SetAutomaticallyRetryOnNetworkChanges(kNumRetries);
   (*it)->url_fetcher->AddExtraRequestHeader(
       base::StringPrintf(kAuthorizationHeaderFormat, access_token.c_str()));
 
   base::DictionaryValue dict;
-  dict.SetStringWithoutPathExpansion(kUrlKey, (*it)->url.spec().c_str());
+  dict.SetStringWithoutPathExpansion(kUrlKey, (*it)->url.spec());
 
   std::string body;
   base::JSONWriter::Write(dict, &body);
   (*it)->url_fetcher->SetUploadData("application/json", body);
 
   (*it)->url_fetcher->Start();
 }
 
 void SafeSearchURLReporter::OnGetTokenFailure(
     const OAuth2TokenService::Request* request,
@@ skipping 42 matching lines @@
     return;
   }
 
   DispatchResult(it, true);
 }
 
 void SafeSearchURLReporter::DispatchResult(ReportIterator it, bool success) {
   (*it)->callback.Run(success);
   reports_.erase(it);
 }