Move more dnd related files to ui/base

ui/base/dragdrop/gtk_dnd_util_unittest.cc

Index: ui/base/dragdrop/gtk_dnd_util_unittest.cc
===================================================================
--- ui/base/dragdrop/gtk_dnd_util_unittest.cc	(revision 71798)
+++ ui/base/dragdrop/gtk_dnd_util_unittest.cc	(working copy)
@@ -1,16 +1,18 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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 <string>
 
-#include "app/gtk_dnd_util.h"
 #include "base/pickle.h"
 #include "base/scoped_ptr.h"
 #include "base/utf_string_conversions.h"
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/dragdrop/gtk_dnd_util.h"
 
+namespace ui {
+
 TEST(GtkDndUtilTest, ExtractNamedURLValid) {
   const std::string kTitle = "title";
   const std::string kUrl = "http://www.foobar.com/";
@@ -75,3 +77,5 @@
 
   EXPECT_FALSE(gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
 }
+
+}  // namespace ui