Update uses of UTF conversions in content/ to use the base:: namespace.

content/shell/browser/shell_win.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 "content/shell/browser/shell.h"
 
 #include <windows.h>
 #include <commctrl.h>
 #include <fcntl.h>
 #include <io.h>
@@ skipping 58 matching lines @@
       id = IDC_NAV_STOP;
       break;
     default:
       NOTREACHED() << "Unknown UI control";
       return;
   }
   EnableWindow(GetDlgItem(window_, id), is_enabled);
 }
 
 void Shell::PlatformSetAddressBarURL(const GURL& url) {
-  std::wstring url_string = UTF8ToWide(url.spec());
+  std::wstring url_string = base::UTF8ToWide(url.spec());
   SendMessage(url_edit_view_, WM_SETTEXT, 0,
               reinterpret_cast<LPARAM>(url_string.c_str()));
 }
 
 void Shell::PlatformSetIsLoading(bool loading) {
 }
 
 void Shell::PlatformCreateWindow(int width, int height) {
   window_ = CreateWindow(kWindowClass, kWindowTitle,
                          WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
@@ skipping 186 matching lines @@
 
   return CallWindowProc(shell->default_edit_wnd_proc_, hwnd, message, wParam,
                         lParam);
 }
 
 void Shell::PlatformSetTitle(const base::string16& text) {
   ::SetWindowText(window_, text.c_str());
 }
 
 }  // namespace content