Remove drag_utils_linux stub.

views/drag_utils_linux.cc

Index: views/drag_utils_linux.cc
diff --git a/views/drag_utils_linux.cc b/views/drag_utils_linux.cc
deleted file mode 100644
index aeeaf32afa2782cf3cd6cb1b6bae26c7cda0b3c0..0000000000000000000000000000000000000000
--- a/views/drag_utils_linux.cc
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright (c) 2011 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 "views/drag_utils.h"
-
-#include "base/logging.h"
-
-namespace drag_utils {
-
-void SetDragImageOnDataObject(const SkBitmap& bitmap,
-                              const gfx::Size& size,
-                              const gfx::Point& cursor_offset,
-                              OSExchangeData* data_object) {
-  NOTIMPLEMENTED();
-}
-
-} // namespace drag_utils