Implement File constructor.

Source/core/fileapi/BlobBuilder.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 76 matching lines @@
     if (!arrayBufferView)
         return;
 
     appendBytesData(arrayBufferView->baseAddress(), arrayBufferView->byteLength());
 }
 
 void BlobBuilder::append(Blob* blob)
 {
     if (!blob)
         return;
-    if (blob->isFile()) {
+    if (blob->hasBackingFile()) {
         File* file = toFile(blob);
         // If the blob is file that is not snapshoted, capture the snapshot now.
         // FIXME: This involves synchronous file operation. We need to figure out how to make it asynchronous.
         long long snapshotSize;
         double snapshotModificationTime;
         file->captureSnapshot(snapshotSize, snapshotModificationTime);
 
         m_size += snapshotSize;
         if (!file->fileSystemURL().isEmpty())
             m_items.append(BlobDataItem(file->fileSystemURL(), 0, snapshotSize, snapshotModificationTime));
         else
             m_items.append(BlobDataItem(file->path(), 0, snapshotSize, snapshotModificationTime));
     } else {
         long long blobSize = static_cast<long long>(blob->size());
         m_size += blobSize;
         m_items.append(BlobDataItem(blob->blobDataHandle(), 0, blobSize));
     }
 }
 
 void BlobBuilder::appendBytesData(const void* data, size_t length)
 {
     Vector<char>& buffer = getBuffer();
     size_t oldSize = buffer.size();
     buffer.append(static_cast<const char*>(data), length);
     m_size += buffer.size() - oldSize;
 }
 
-PassRefPtr<Blob> BlobBuilder::getBlob(const String& contentType)
+PassRefPtr<Blob> BlobBuilder::createBlob(const String& contentType)
 {
     OwnPtr<BlobData> blobData = BlobData::create();
     blobData->setContentType(contentType);
     blobData->swapItems(m_items);
 
     RefPtr<Blob> blob = Blob::create(BlobDataHandle::create(blobData.release(), m_size));
 
     // After creating a blob from the current blob data, we do not need to keep the data around any more.
     // Instead, we only need to keep a reference to the blob data just created.
     m_items.append(BlobDataItem(blob->blobDataHandle(), 0, m_size));
 
-    return blob;
+    return blob.release();
+}
+
+PassRefPtr<File> BlobBuilder::createFile(const String& contentType, const String& fileName, double modificationTime)
+{
+    OwnPtr<BlobData> blobData = BlobData::create();
+    blobData->setContentType(contentType);
+    blobData->swapItems(m_items);
+
+    RefPtr<File> file = File::create(fileName, modificationTime, BlobDataHandle::create(blobData.release(), m_size));
+
+    // After creating a file from the current blob data, we do not need to keep the data around any more.
+    // Instead, we only need to keep a reference to the blob data just created.
+    m_items.append(BlobDataItem(file->blobDataHandle(), 0, m_size));
+
+    return file.release();
 }
 
 } // namespace WebCore