Enable custom MIME types in web copy/paste.

ui/base/clipboard/clipboard.h

 // 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 UI_BASE_CLIPBOARD_CLIPBOARD_H_
 #define UI_BASE_CLIPBOARD_CLIPBOARD_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 168 matching lines @@
   static FormatType GetUrlWFormatType();
   static FormatType GetMozUrlFormatType();
   static FormatType GetPlainTextFormatType();
   static FormatType GetPlainTextWFormatType();
   static FormatType GetFilenameFormatType();
   static FormatType GetFilenameWFormatType();
   static FormatType GetWebKitSmartPasteFormatType();
   // Win: MS HTML Format, Other: Generic HTML format
   static FormatType GetHtmlFormatType();
   static FormatType GetBitmapFormatType();
+  static FormatType GetWebCustomDataFormatType();
 
   // Embeds a pointer to a SharedMemory object pointed to by |bitmap_handle|
   // belonging to |process| into a shared bitmap [CBF_SMBITMAP] slot in
   // |objects|.  The pointer is deleted by DispatchObjects().
   //
   // On non-Windows platforms, |process| is ignored.
   static void ReplaceSharedMemHandle(ObjectMap* objects,
                                      base::SharedMemoryHandle bitmap_handle,
                                      base::ProcessHandle process);
 #if defined(OS_WIN)
@@ skipping 83 matching lines @@
   static const char kMimeTypeText[];
   static const char kMimeTypeHTML[];
   static const char kMimeTypePNG[];
 
   DISALLOW_COPY_AND_ASSIGN(Clipboard);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_CLIPBOARD_CLIPBOARD_H_