Remove generated directories with 100s of files.

client/html/generated/html/dartium/ButtonElement.dart

Index: client/html/generated/html/dartium/ButtonElement.dart
diff --git a/client/html/generated/html/dartium/ButtonElement.dart b/client/html/generated/html/dartium/ButtonElement.dart
deleted file mode 100644
index ec8fce9cfcdf53b3bdc2f0a00ba7d53797861062..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/ButtonElement.dart
+++ /dev/null
@@ -1,61 +0,0 @@
-
-class _ButtonElementImpl extends _ElementImpl implements ButtonElement {
-  _ButtonElementImpl._wrap(ptr) : super._wrap(ptr);
-
-  bool get autofocus() => _wrap(_ptr.autofocus);
-
-  void set autofocus(bool value) { _ptr.autofocus = _unwrap(value); }
-
-  bool get disabled() => _wrap(_ptr.disabled);
-
-  void set disabled(bool value) { _ptr.disabled = _unwrap(value); }
-
-  FormElement get form() => _wrap(_ptr.form);
-
-  String get formAction() => _wrap(_ptr.formAction);
-
-  void set formAction(String value) { _ptr.formAction = _unwrap(value); }
-
-  String get formEnctype() => _wrap(_ptr.formEnctype);
-
-  void set formEnctype(String value) { _ptr.formEnctype = _unwrap(value); }
-
-  String get formMethod() => _wrap(_ptr.formMethod);
-
-  void set formMethod(String value) { _ptr.formMethod = _unwrap(value); }
-
-  bool get formNoValidate() => _wrap(_ptr.formNoValidate);
-
-  void set formNoValidate(bool value) { _ptr.formNoValidate = _unwrap(value); }
-
-  String get formTarget() => _wrap(_ptr.formTarget);
-
-  void set formTarget(String value) { _ptr.formTarget = _unwrap(value); }
-
-  NodeList get labels() => _wrap(_ptr.labels);
-
-  String get name() => _wrap(_ptr.name);
-
-  void set name(String value) { _ptr.name = _unwrap(value); }
-
-  String get type() => _wrap(_ptr.type);
-
-  String get validationMessage() => _wrap(_ptr.validationMessage);
-
-  ValidityState get validity() => _wrap(_ptr.validity);
-
-  String get value() => _wrap(_ptr.value);
-
-  void set value(String value) { _ptr.value = _unwrap(value); }
-
-  bool get willValidate() => _wrap(_ptr.willValidate);
-
-  bool checkValidity() {
-    return _wrap(_ptr.checkValidity());
-  }
-
-  void setCustomValidity(String error) {
-    _ptr.setCustomValidity(_unwrap(error));
-    return;
-  }
-}