Update some uses of UTF conversions in chrome/browser to use the base:: namespace.

chrome/browser/ui/app_list/search/people/people_provider.cc

 // Copyright 2013 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/app_list/search/people/people_provider.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 38 matching lines @@
 
 PeopleProvider::~PeopleProvider() {}
 
 void PeopleProvider::Start(const base::string16& query) {
   ClearResults();
   if (!IsValidQuery(query)) {
     query_.clear();
     return;
   }
 
-  query_ = UTF16ToUTF8(query);
+  query_ = base::UTF16ToUTF8(query);
 
   const CacheResult result = cache_->Get(WebserviceCache::PEOPLE, query_);
   if (result.second) {
     ProcessPeopleSearchResults(result.second);
     if (!people_search_fetched_callback_.is_null())
       people_search_fetched_callback_.Run();
     if (result.first == FRESH)
       return;
   }
 
@@ skipping 121 matching lines @@
 
 void PeopleProvider::SetupForTest(
     const base::Closure& people_search_fetched_callback,
     const GURL& people_search_url) {
   people_search_fetched_callback_ = people_search_fetched_callback;
   people_search_url_ = people_search_url;
   skip_request_token_for_test_ = true;
 }
 
 }  // namespace app_list