Move OSExchangeData from src/app to src/ui/base/dragdrop...

ui/base/dragdrop/os_exchange_data.h

-// 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.
 
-#ifndef APP_OS_EXCHANGE_DATA_H_
-#define APP_OS_EXCHANGE_DATA_H_
+#ifndef UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_H_
+#define UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_H_
 #pragma once
 
 #include "build/build_config.h"
 
 #include <set>
 #include <string>
 
 #if defined(OS_WIN)
 #include <objidl.h>
 #elif !defined(OS_MACOSX)
 #include <gtk/gtk.h>
 #endif
 
 #include "app/download_file_interface.h"
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/scoped_ptr.h"
 
 class GURL;
 class Pickle;
 
+namespace ui {
+
 ///////////////////////////////////////////////////////////////////////////////
 //
 // OSExchangeData
 //  An object that holds interchange data to be sent out to OS services like
 //  clipboard, drag and drop, etc. This object exposes an API that clients can
 //  use to specify raw data and its high level type. This object takes care of
 //  translating that into something the OS can understand.
 //
 ///////////////////////////////////////////////////////////////////////////////
 
@@ skipping 147 matching lines @@
  private:
   // Creates the platform specific Provider.
   static Provider* CreateProvider();
 
   // Provides the actual data.
   scoped_ptr<Provider> provider_;
 
   DISALLOW_COPY_AND_ASSIGN(OSExchangeData);
 };
 
-#endif  // APP_OS_EXCHANGE_DATA_H_
+}  // namespace ui
+
+#endif  // UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_H_