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

chrome/browser/autocomplete/history_quick_provider.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/autocomplete/history_quick_provider.h"
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
@@ skipping 129 matching lines @@
     // completions (which may be available because it's a different
     // data structure) compete with the URL-what-you-typed match as
     // normal.
     if (history_service) {
       history::URLDatabase* url_db = history_service->InMemoryDatabase();
       // url_db can be NULL if it hasn't finished initializing (or
       // failed to to initialize).  In this case, we let HistoryQuick
       // provider completions compete with the URL-what-you-typed
       // match as normal.
       if (url_db) {
-        const std::string host(UTF16ToUTF8(autocomplete_input_.text().substr(
-            autocomplete_input_.parts().host.begin,
-            autocomplete_input_.parts().host.len)));
+        const std::string host(base::UTF16ToUTF8(
+            autocomplete_input_.text().substr(
+                autocomplete_input_.parts().host.begin,
+                autocomplete_input_.parts().host.len)));
         // We want to put the URL-what-you-typed match first if either
         // * the user visited the URL before (intranet or internet).
         // * it's a URL on a host that user visited before and this
         //   is the root path of the host.  (If the user types some
         //   of a path--more than a simple "/"--we let autocomplete compete
         //   normally with the URL-what-you-typed match.)
         // TODO(mpearson): Remove this hacky code and simply score URL-what-
         // you-typed in some sane way relative to possible completions:
         // URL-what-you-typed should get some sort of a boost relative
         // to completions, but completions should naturally win if
@@ skipping 146 matching lines @@
   if (index_for_testing_.get())
     return index_for_testing_.get();
 
   HistoryService* const history_service =
       HistoryServiceFactory::GetForProfile(profile_, Profile::EXPLICIT_ACCESS);
   if (!history_service)
     return NULL;
 
   return history_service->InMemoryIndex();
 }