Use BlobCallback in toBlob instead of FileCallback

third_party/WebKit/Source/core/fileapi/Blob.cpp

 /*
  * Copyright (C) 2010 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 87 matching lines @@
 
     OwnPtr<BlobData> blobData = BlobData::create();
     blobData->setContentType(options.type().lower());
 
     populateBlobData(blobData.get(), blobParts, normalizeLineEndingsToNative);
 
     long long blobSize = blobData->length();
     return new Blob(BlobDataHandle::create(blobData.release(), blobSize));
 }
 
+Blob* Blob::create(const unsigned char* data, size_t bytes, const String& contentType)
+{
+    ASSERT(data);
+
+    OwnPtr<BlobData> blobData = BlobData::create();
+    blobData->setContentType(contentType);
+    blobData->appendBytes(data, bytes);
+    long long blobSize = blobData->length();
+
+    return new Blob(BlobDataHandle::create(blobData.release(), blobSize));
+}
+
 void Blob::clampSliceOffsets(long long size, long long& start, long long& end)
 {
     ASSERT(size != -1);
 
     // Convert the negative value that is used to select from the end.
     if (start < 0)
         start = start + size;
     if (end < 0)
         end = end + size;
 
@@ skipping 55 matching lines @@
 {
     blobData.appendBlob(m_blobDataHandle, 0, m_blobDataHandle->size());
 }
 
 URLRegistry& Blob::registry() const
 {
     return BlobURLRegistry::registry();
 }
 
 } // namespace blink