Implement File constructor.

Source/core/fileapi/BlobBuilder.h

 /*
  * 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 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef BlobBuilder_h
 #define BlobBuilder_h
 
 #include "platform/blob/BlobData.h"
 #include "wtf/Forward.h"
 
-namespace WTF{
-class TextEncoding;
-}
-
 namespace WebCore {
 
 class Blob;
-
-typedef int ExceptionCode;
+class File;
 
 class BlobBuilder {
 public:
     BlobBuilder();
 
     void append(Blob*);
     void append(const String& text, const String& ending);
     void append(ArrayBuffer*);
     void append(ArrayBufferView*);
 
-    PassRefPtr<Blob> getBlob(const String& contentType);
+    PassRefPtr<Blob> createBlob(const String& contentType);
+    PassRefPtr<File> createFile(const String& contentType, const String& fileName, double modificationTime);
 
 private:
     void appendBytesData(const void*, size_t);
 
     Vector<char>& getBuffer();
 
     long long m_size;
     BlobDataItemList m_items;
 };
 
 } // namespace WebCore
 
 #endif // BlobBuilder_h