Move Singleton and related structs to namespace base

ui/events/ozone/chromeos/cursor_controller.cc

 // Copyright (c) 2014 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 "ui/events/ozone/chromeos/cursor_controller.h"
 
 namespace ui {
 
 namespace {
 
@@ skipping 23 matching lines @@
   }
 
   delta->set_x(dx * scale);
   delta->set_y(dy * scale);
 }
 
 }  // namespace
 
 // static
 CursorController* CursorController::GetInstance() {
-  return Singleton<CursorController>::get();
+  return base::Singleton<CursorController>::get();
 }
 
 void CursorController::SetCursorConfigForWindow(gfx::AcceleratedWidget widget,
                                                 gfx::Display::Rotation rotation,
                                                 float scale) {
   base::AutoLock lock(window_to_cursor_configuration_map_lock_);
   PerWindowCursorConfiguration config = {rotation, scale};
   window_to_cursor_configuration_map_[widget] = config;
 }
 
@@ skipping 10 matching lines @@
     TransformCursorMove(it->second.rotation, it->second.scale, delta);
 }
 
 CursorController::CursorController() {
 }
 
 CursorController::~CursorController() {
 }
 
 }  // namespace ui