Move more dnd related files to ui/base

ui/base/dragdrop/gtk_dnd_util_unittest.cc

-// 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/";
   Pickle pickle;
   pickle.WriteString(kTitle);
   pickle.WriteString(kUrl);
 
   GtkSelectionData data;
   scoped_array<guchar> test_data(new guchar[pickle.size()]);
@@ skipping 45 matching lines @@
   Pickle pickle;
   pickle.WriteString(kTitle);
 
   scoped_array<guchar> test_data(new guchar[pickle.size()]);
   memcpy(test_data.get(), pickle.data(), pickle.size());
   data.data = test_data.get();
   data.length = pickle.size();
 
   EXPECT_FALSE(gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
 }
+
+}  // namespace ui