Continue to clean c_str() calls.

chrome/browser/ui/webui/instant_ui.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/instant_ui.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 103 matching lines @@
 
 void InstantUIMessageHandler::SetPreferenceValue(const base::ListValue* args) {
   std::string pref_name;
   if (!args->GetString(0, &pref_name)) return;
 
   if (pref_name == prefs::kInstantUIZeroSuggestUrlPrefix) {
     std::string value;
     if (!args->GetString(1, &value))
       return;
     PrefService* prefs = Profile::FromWebUI(web_ui())->GetPrefs();
-    prefs->SetString(pref_name.c_str(), value);
+    prefs->SetString(pref_name, value);
   }
 }
 
 void InstantUIMessageHandler::GetDebugInfo(const base::ListValue* args) {
 #if !defined(OS_ANDROID)
   typedef std::pair<int64_t, std::string> DebugEvent;
 
   if (!web_ui()->GetWebContents())
     return;
   Browser* browser = chrome::FindBrowserWithWebContents(
@@ skipping 45 matching lines @@
   Profile* profile = Profile::FromWebUI(web_ui);
   content::WebUIDataSource::Add(profile, CreateInstantHTMLSource());
 }
 
 // static
 void InstantUI::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterStringPref(prefs::kInstantUIZeroSuggestUrlPrefix,
                                std::string());
 }