Adds some ifdefs so that test_shell can be compiled on linux...

base/clipboard.h

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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 BASE_CLIPBOARD_H_
 #define BASE_CLIPBOARD_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/process.h"
 #include "base/string16.h"
 #include "base/gfx/size.h"
 
 class Clipboard {
  public:
   typedef std::string FormatType;
 #if defined(OS_LINUX)
+#if defined(TOOLKIT_GTK)
   typedef struct _GtkClipboard GtkClipboard;
+#endif
   typedef std::map<FormatType, std::pair<char*, size_t> > TargetMap;
 #endif
 
   // ObjectType designates the type of data to be stored in the clipboard. This
   // designation is shared across all OSes. The system-specific designation
   // is defined by FormatType. A single ObjectType might be represented by
   // several system-specific FormatTypes. For example, on Linux the CBF_TEXT
   // ObjectType maps to "text/plain", "STRING", and several other formats. On
   // windows it maps to CF_UNICODETEXT.
   enum ObjectType {
@@ skipping 156 matching lines @@
   // it in |clipboard_data_|.
 
   // Write changes to gtk clipboard.
   void SetGtkClipboard();
   // Free pointers in clipboard_data_ and clear() the map.
   void FreeTargetMap();
   // Insert a mapping into clipboard_data_.
   void InsertMapping(const char* key, char* data, size_t data_len);
 
   TargetMap* clipboard_data_;
+#if defined(TOOLKIT_GTK)
   GtkClipboard* clipboard_;
 #endif
+#endif
 
   DISALLOW_EVIL_CONSTRUCTORS(Clipboard);
 };
 
 #endif  // BASE_CLIPBOARD_H_