Moves DragDropClient to aura/client

ash/root_window_controller.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/root_window_controller.h"
 
 #include <queue>
 #include <vector>
 
 #include "ash/aura/aura_layout_manager_adapter.h"
@@ skipping 43 matching lines @@
 #include "ash/wm/stacking_controller.h"
 #include "ash/wm/system_wallpaper_controller.h"
 #include "ash/wm/window_properties.h"
 #include "ash/wm/window_state_aura.h"
 #include "ash/wm/window_util.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/time/time.h"
 #include "ui/aura/client/aura_constants.h"
+#include "ui/aura/client/drag_drop_client.h"
 #include "ui/aura/client/screen_position_client.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_observer.h"
 #include "ui/aura/window_tracker.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/keyboard/keyboard_controller.h"
 #include "ui/keyboard/keyboard_util.h"
 #include "ui/views/view_model.h"
 #include "ui/views/view_model_utils.h"
 #include "ui/wm/core/capture_controller.h"
 #include "ui/wm/core/visibility_controller.h"
 #include "ui/wm/core/window_util.h"
-#include "ui/wm/public/drag_drop_client.h"
 #include "ui/wm/public/tooltip_client.h"
 #include "ui/wm/public/window_types.h"
 
 #if defined(OS_CHROMEOS)
 #include "ash/ash_touch_exploration_manager_chromeos.h"
 #include "ash/wm/boot_splash_screen_chromeos.h"
 #include "chromeos/chromeos_switches.h"
 #include "ui/chromeos/touch_exploration_controller.h"
 #endif
 
@@ skipping 479 matching lines @@
     EnableTouchHudProjection();
   else
     DisableTouchHudProjection();
 }
 
 RootWindowController* GetRootWindowController(const aura::Window* root_window) {
   return root_window ? GetRootWindowSettings(root_window)->controller : nullptr;
 }
 
 }  // namespace ash