Remove generated directories with 100s of files.

client/html/generated/html/dartium/MediaStream.dart

Index: client/html/generated/html/dartium/MediaStream.dart
diff --git a/client/html/generated/html/dartium/MediaStream.dart b/client/html/generated/html/dartium/MediaStream.dart
deleted file mode 100644
index 0d20eba8c1cec2eb6fb36ef6d47e4e820f0007b0..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/MediaStream.dart
+++ /dev/null
@@ -1,40 +0,0 @@
-
-class _MediaStreamImpl extends _DOMTypeBase implements MediaStream {
-  _MediaStreamImpl._wrap(ptr) : super._wrap(ptr);
-
-  MediaStreamTrackList get audioTracks() => _wrap(_ptr.audioTracks);
-
-  String get label() => _wrap(_ptr.label);
-
-  EventListener get onended() => _wrap(_ptr.onended);
-
-  void set onended(EventListener value) { _ptr.onended = _unwrap(value); }
-
-  int get readyState() => _wrap(_ptr.readyState);
-
-  MediaStreamTrackList get videoTracks() => _wrap(_ptr.videoTracks);
-
-  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 event) {
-    return _wrap(_ptr.dispatchEvent(_unwrap(event)));
-  }
-
-  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;
-    }
-  }
-}