ash: Remove a few unused includes.

ash/keyboard_overlay/keyboard_overlay_delegate.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 "ash/keyboard_overlay/keyboard_overlay_delegate.h"
 
 #include <algorithm>
 
 #include "ash/shell.h"
 #include "base/bind.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/browser/web_ui_message_handler.h"
 #include "ui/aura/window_event_dispatcher.h"
-#include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/controls/webview/web_dialog_view.h"
 #include "ui/views/widget/widget.h"
 
 using content::WebContents;
 using content::WebUIMessageHandler;
 
 namespace {
 
 const int kBaseWidth = 1252;
@@ skipping 112 matching lines @@
 bool KeyboardOverlayDelegate::ShouldShowDialogTitle() const {
   return false;
 }
 
 bool KeyboardOverlayDelegate::HandleContextMenu(
     const content::ContextMenuParams& params) {
   return true;
 }
 
 }  // namespace ash