Move Singleton and related structs to namespace base

ui/events/devices/x11/touch_factory_x11.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 "ui/events/devices/x11/touch_factory_x11.h"
 
 #include <X11/Xatom.h>
 #include <X11/cursorfont.h>
 #include <X11/extensions/XInput.h>
 #include <X11/extensions/XInput2.h>
@@ skipping 31 matching lines @@
   touch_events_disabled_ = cmdline->HasSwitch(switches::kTouchEvents) &&
       cmdline->GetSwitchValueASCII(switches::kTouchEvents) ==
           switches::kTouchEventsDisabled;
 }
 
 TouchFactory::~TouchFactory() {
 }
 
 // static
 TouchFactory* TouchFactory::GetInstance() {
-  return Singleton<TouchFactory>::get();
+  return base::Singleton<TouchFactory>::get();
 }
 
 // static
 void TouchFactory::SetTouchDeviceListFromCommandLine() {
   // Get a list of pointer-devices that should be treated as touch-devices.
   // This is primarily used for testing/debugging touch-event processing when a
   // touch-device isn't available.
   std::string touch_devices =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kTouchDevices);
@@ skipping 250 matching lines @@
       std::find_if(touchscreens.begin(), touchscreens.end(),
                    [device_id](const TouchscreenDevice& touchscreen) {
                      return touchscreen.id == device_id;
                    });
   // Internal displays will have a vid and pid of 0. Ignore them.
   if (it != touchscreens.end() && it->vendor_id && it->product_id)
     touchscreen_ids_.insert(std::make_pair(it->vendor_id, it->product_id));
 }
 
 }  // namespace ui