Add glue for supporting custom MIME types in DataTransfer.

ui/base/clipboard/clipboard_aurax11.cc

 // 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 "ui/base/clipboard/clipboard.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/linux_util.h"
@@ skipping 222 matching lines @@
       *pixel = (bitmap[byte_counter] << 0) +      /* R */
                (bitmap[byte_counter + 1] << 8) +  /* G */
                (bitmap[byte_counter + 2] << 16) + /* B */
                (bitmap[byte_counter + 3] << 24);  /* A */
       byte_counter += 4;
     }
   }
   return image;
 }
 
+void Clipboard::ReadCustomData(Buffer buffer,
+                               const string16& data,

[sky, 2011/12/02 16:06:27]

nit: data->type

+                               string16* result) const {
+  // TODO(dcheng): Implement this.
+  NOTIMPLEMENTED();
+}
+
 void Clipboard::ReadBookmark(string16* title, std::string* url) const {
   *title = UTF8ToUTF16(GetClipboardData()->bookmark_title());
   *url = GetClipboardData()->bookmark_url();
 }
 
 void Clipboard::ReadFile(FilePath* file) const {
   NOTIMPLEMENTED();
 }
 
 void Clipboard::ReadFiles(std::vector<FilePath>* files) const {
@@ skipping 65 matching lines @@
 Clipboard::FormatType Clipboard::GetBitmapFormatType() {
   return std::string(kMimeTypeBitmap);
 }
 
 // static
 Clipboard::FormatType Clipboard::GetWebKitSmartPasteFormatType() {
   return std::string(kMimeTypeWebkitSmartPaste);
 }
 
 }  // namespace ui