Generate dart:html bindings for Dartium as well as Frog. All unittests now pass (or are disabled fo…

client/html/generated/html/dartium/FileWriterSync.dart

+
+class _FileWriterSyncImpl extends _DOMTypeBase implements FileWriterSync {
+  _FileWriterSyncImpl._wrap(ptr) : super._wrap(ptr);
+
+  int get length() => _wrap(_ptr.length);
+
+  int get position() => _wrap(_ptr.position);
+
+  void seek(int position) {
+    _ptr.seek(_unwrap(position));
+    return;
+  }
+
+  void truncate(int size) {
+    _ptr.truncate(_unwrap(size));
+    return;
+  }
+
+  void write(Blob data) {
+    _ptr.write(_unwrap(data));
+    return;
+  }
+}