[#1] Delete reduntdant 19 header files in ui/gfx (8 of 19 by this)

ui/base/dragdrop/os_exchange_data_provider_aurax11.h

 // 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.
 
 #ifndef UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_AURAX11_H_
 #define UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_AURAX11_H_
 
 #include <X11/Xlib.h>
 
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
 #undef RootWindow
 
 #include <map>
 
 #include "base/files/file_path.h"
 #include "base/pickle.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
 #include "ui/base/x/selection_owner.h"
 #include "ui/base/x/selection_requestor.h"
 #include "ui/base/x/selection_utils.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
+#include "ui/gfx/geometry/vector2d.h"
 #include "ui/gfx/image/image_skia.h"
-#include "ui/gfx/vector2d.h"
 #include "ui/gfx/x/x11_atom_cache.h"
 #include "url/gurl.h"
 
 namespace ui {
 
 class Clipboard;
 class OSExchangeDataProviderAuraX11Test;
 
 // OSExchangeData::Provider implementation for aura on linux.
 class UI_BASE_EXPORT OSExchangeDataProviderAuraX11
@@ skipping 108 matching lines @@
 
   // Takes a snapshot of |format_map_| and offers it to other windows.
   mutable SelectionOwner selection_owner_;
 
   DISALLOW_COPY_AND_ASSIGN(OSExchangeDataProviderAuraX11);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_AURAX11_H_