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

ash/content/display/screen_orientation_controller_chromeos_unittest.cc

 // Copyright 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 "ash/display/screen_orientation_controller_chromeos.h"
 
 #include <memory>
 #include <vector>
 
-#include "ash/ash_switches.h"
+#include "ash/common/ash_switches.h"
 #include "ash/content/shell_content_state.h"
 #include "ash/display/display_info.h"
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/ash_test_helper.h"
 #include "ash/test/content/test_shell_content_state.h"
 #include "ash/test/display_manager_test_api.h"
 #include "ash/test/test_shell_delegate.h"
 #include "ash/test/test_system_tray_delegate.h"
@@ skipping 628 matching lines @@
                               .GetActiveRotation());
 
   Shell::GetInstance()->screen_orientation_controller()->SetDisplayRotation(
       kNewRotation, display::Display::ROTATION_SOURCE_ACTIVE);
 
   EXPECT_EQ(kNewRotation, display_manager->GetDisplayInfo(kInternalDisplayId)
                               .GetActiveRotation());
 }
 
 }  // namespace ash