Move DraggableRegion to top directory src/extensions/common

chrome/common/extensions/draggable_region.cc

Index: chrome/common/extensions/draggable_region.cc
diff --git a/chrome/common/extensions/draggable_region.cc b/chrome/common/extensions/draggable_region.cc
deleted file mode 100644
index 0556e72bbe4090bd77b3fb1a65ddc9a6d4c72625..0000000000000000000000000000000000000000
--- a/chrome/common/extensions/draggable_region.cc
+++ /dev/null
@@ -1,13 +0,0 @@
-// 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 "chrome/common/extensions/draggable_region.h"
-
-namespace extensions {
-
-DraggableRegion::DraggableRegion()
-    : draggable(false) {
-}
-
-}  // namespace extensions