mash: Move ash_switches.* to ash/common; cleanup DEPS.

ash/common/system/chromeos/power/tray_power_unittest.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 "ash/common/system/chromeos/power/tray_power.h"
 
 #include <map>
 #include <memory>
 #include <string>
 
-#include "ash/ash_switches.h"
+#include "ash/common/ash_switches.h"
 #include "ash/test/ash_test_base.h"
 #include "chromeos/dbus/power_manager/power_supply_properties.pb.h"
 #include "ui/message_center/fake_message_center.h"
 
 using message_center::Notification;
 using power_manager::PowerSupplyProperties;
 
 namespace {
 
 class MockMessageCenter : public message_center::FakeMessageCenter {
@@ skipping 404 matching lines @@
       power_manager::PowerSupplyProperties_ExternalPower_USB);
   safe_usb.set_battery_percent(TrayPower::kNoWarningPercentage - 0.1);
   {
     SCOPED_TRACE("Notification removed for rounded percent above threshold");
     UpdateNotificationState(safe_usb, TrayPower::NOTIFICATION_NONE, false,
                             true);
   }
 }
 
 }  // namespace ash