********** WebCore blob hacking

WebCore/platform/chromium/ChromiumDataObjectItem.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 125 matching lines @@
     if (type() == mimeTypeImagePng) {
         // FIXME: This is pretty inefficient. We copy the data from the browser
         // to the renderer. We then place it in a blob in WebKit, which
         // registers it and copies it *back* to the browser. When a consumer
         // wants to read the data, we then copy the data back into the renderer.
         // https://bugs.webkit.org/show_bug.cgi?id=58107 has been filed to track
         // improvements to this code (in particular, add a registerClipboardBlob
         // method to the blob registry; that way the data is only copied over
         // into the renderer when it's actually read, not when the blob is
         // initially constructed).
+        // TODO: Could use a BlobRegistry interface to create a blobDataHandle directly from the clipboard data w/o having to read it?
         RefPtr<SharedBuffer> data = static_cast<PassRefPtr<SharedBuffer> >(WebKit::Platform::current()->clipboard()->readImage(WebKit::WebClipboard::BufferStandard));
         RefPtr<RawData> rawData = RawData::create();
         rawData->mutableData()->append(data->data(), data->size());
         OwnPtr<BlobData> blobData = BlobData::create();
         blobData->appendData(rawData, 0, -1);
         blobData->setContentType(mimeTypeImagePng);
-        return Blob::create(blobData.release(), data->size());
+        return Blob::create(BlobDataHandle::create(blobData.release(), data->size()));
     }
 
     return 0;
 }
 
 String ChromiumDataObjectItem::internalGetAsString() const
 {
     ASSERT(m_kind == DataTransferItem::kindString);
 
     if (m_source == InternalSource)
@@ skipping 18 matching lines @@
 bool ChromiumDataObjectItem::isFilename() const
 {
     // FIXME: https://bugs.webkit.org/show_bug.cgi?id=81261: When we properly support File dragout,
     // we'll need to make sure this works as expected for DragDataChromium.
     return m_kind == DataTransferItem::kindFile && m_file;
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(DATA_TRANSFER_ITEMS)