Remove generated directories with 100s of files.

client/html/generated/html/dartium/TextTrack.dart

Index: client/html/generated/html/dartium/TextTrack.dart
diff --git a/client/html/generated/html/dartium/TextTrack.dart b/client/html/generated/html/dartium/TextTrack.dart
deleted file mode 100644
index 40a0288640f89a83effb13a0de9bd9a97fe2cdbe..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/TextTrack.dart
+++ /dev/null
@@ -1,56 +0,0 @@
-
-class _TextTrackImpl extends _DOMTypeBase implements TextTrack {
-  _TextTrackImpl._wrap(ptr) : super._wrap(ptr);
-
-  TextTrackCueList get activeCues() => _wrap(_ptr.activeCues);
-
-  TextTrackCueList get cues() => _wrap(_ptr.cues);
-
-  String get kind() => _wrap(_ptr.kind);
-
-  String get label() => _wrap(_ptr.label);
-
-  String get language() => _wrap(_ptr.language);
-
-  int get mode() => _wrap(_ptr.mode);
-
-  void set mode(int value) { _ptr.mode = _unwrap(value); }
-
-  EventListener get oncuechange() => _wrap(_ptr.oncuechange);
-
-  void set oncuechange(EventListener value) { _ptr.oncuechange = _unwrap(value); }
-
-  void addCue(TextTrackCue cue) {
-    _ptr.addCue(_unwrap(cue));
-    return;
-  }
-
-  void addEventListener(String type, EventListener listener, [bool useCapture = null]) {
-    if (useCapture === null) {
-      _ptr.addEventListener(_unwrap(type), _unwrap(listener));
-      return;
-    } else {
-      _ptr.addEventListener(_unwrap(type), _unwrap(listener), _unwrap(useCapture));
-      return;
-    }
-  }
-
-  bool dispatchEvent(Event evt) {
-    return _wrap(_ptr.dispatchEvent(_unwrap(evt)));
-  }
-
-  void removeCue(TextTrackCue cue) {
-    _ptr.removeCue(_unwrap(cue));
-    return;
-  }
-
-  void removeEventListener(String type, EventListener listener, [bool useCapture = null]) {
-    if (useCapture === null) {
-      _ptr.removeEventListener(_unwrap(type), _unwrap(listener));
-      return;
-    } else {
-      _ptr.removeEventListener(_unwrap(type), _unwrap(listener), _unwrap(useCapture));
-      return;
-    }
-  }
-}