Remove unused typemap includes from generated C++ mojo bindings.

services/ui/ws/drag_controller.h

 // Copyright 2016 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.
 
 #ifndef SERVICES_UI_WS_DRAG_CONTROLLER_H_
 #define SERVICES_UI_WS_DRAG_CONTROLLER_H_
 
 #include <map>
 #include <set>
 
 #include "base/memory/weak_ptr.h"
 #include "services/ui/common/types.h"
 #include "services/ui/public/interfaces/cursor.mojom.h"
 #include "services/ui/ws/ids.h"
 #include "services/ui/ws/server_window_observer.h"
 
+namespace gfx {
+class Point;
+}
+
 namespace ui {
+class PointerEvent;
+
 namespace ws {
 
 namespace test {
 class DragControllerTestApi;
 }
 
 class DragCursorUpdater;
 class DragSource;
 class DragTargetConnection;
 
@@ skipping 117 matching lines @@
 
   base::WeakPtrFactory<DragController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DragController);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_DRAG_CONTROLLER_H_