Update some uses of char16 to use the base:: namespace.

chrome/browser/ui/gtk/gtk_util.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/gtk/gtk_util.h"
 
 #include <cairo/cairo.h>
 
 #include <algorithm>
 #include <cstdarg>
@@ skipping 928 matching lines @@
   gtk_window_get_position(GTK_WINDOW(dialog), &x, &y);
   gtk_window_get_size(GTK_WINDOW(dialog), &width, &height);
 
   return gfx::Rect(x, y, width, height);
 }
 
 base::string16 GetStockPreferencesMenuLabel() {
   GtkStockItem stock_item;
   base::string16 preferences;
   if (gtk_stock_lookup(GTK_STOCK_PREFERENCES, &stock_item)) {
-    const char16 kUnderscore[] = { '_', 0 };
+    const base::char16 kUnderscore[] = { '_', 0 };
     base::RemoveChars(base::UTF8ToUTF16(stock_item.label),
                       kUnderscore, &preferences);
   }
   return preferences;
 }
 
 bool IsWidgetAncestryVisible(GtkWidget* widget) {
   GtkWidget* parent = widget;
   while (parent && gtk_widget_get_visible(parent))
     parent = gtk_widget_get_parent(parent);
@@ skipping 33 matching lines @@
   if (gtk_window_get_modal(GTK_WINDOW(dialog))) {
     // Work around a KDE 3 window manager bug.
     scoped_ptr<base::Environment> env(base::Environment::Create());
     if (base::nix::DESKTOP_ENVIRONMENT_KDE3 ==
         base::nix::GetDesktopEnvironment(env.get()))
       gtk_window_set_skip_taskbar_hint(GTK_WINDOW(dialog), FALSE);
   }
 }
 
 }  // namespace gtk_util