Blob support for IDB [Chromium]

webkit/browser/fileapi/file_stream_writer.h

Index: webkit/browser/fileapi/file_stream_writer.h
diff --git a/webkit/browser/fileapi/file_stream_writer.h b/webkit/browser/fileapi/file_stream_writer.h
index 1ebdfb9191af2a0b2a7b5fd4fc12ff8e4d96330c..893583844f413073c0c97025afe695128b4f533f 100644
--- a/webkit/browser/fileapi/file_stream_writer.h
+++ b/webkit/browser/fileapi/file_stream_writer.h
@@ -23,12 +23,18 @@ namespace fileapi {
 // A generic interface for writing to a file-like object.
 class FileStreamWriter {
  public:
+  enum OpenOrCreate {
+    OPEN_EXISTING,
+    CREATE_NEW
+  };
+
   // Creates a writer for the existing file in the path |file_path| starting
   // from |initial_offset|. Uses |task_runner| for async file operations.
   WEBKIT_STORAGE_BROWSER_EXPORT static FileStreamWriter* CreateForLocalFile(
       base::TaskRunner* task_runner,
       const base::FilePath& file_path,
-      int64 initial_offset);
+      int64 initial_offset,
+      OpenOrCreate open_or_create);
 
   // Closes the file. If there's an in-flight operation, it is canceled (i.e.,
   // the callback function associated with the operation is not called).