Remove generated directories with 100s of files.

client/html/generated/html/dartium/StorageEvent.dart

Index: client/html/generated/html/dartium/StorageEvent.dart
diff --git a/client/html/generated/html/dartium/StorageEvent.dart b/client/html/generated/html/dartium/StorageEvent.dart
deleted file mode 100644
index 5dbe9892db1cecdb0e015ec501329c85d339a5a5..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/StorageEvent.dart
+++ /dev/null
@@ -1,19 +0,0 @@
-
-class _StorageEventImpl extends _EventImpl implements StorageEvent {
-  _StorageEventImpl._wrap(ptr) : super._wrap(ptr);
-
-  String get key() => _wrap(_ptr.key);
-
-  String get newValue() => _wrap(_ptr.newValue);
-
-  String get oldValue() => _wrap(_ptr.oldValue);
-
-  Storage get storageArea() => _wrap(_ptr.storageArea);
-
-  String get url() => _wrap(_ptr.url);
-
-  void initStorageEvent(String typeArg, bool canBubbleArg, bool cancelableArg, String keyArg, String oldValueArg, String newValueArg, String urlArg, Storage storageAreaArg) {
-    _ptr.initStorageEvent(_unwrap(typeArg), _unwrap(canBubbleArg), _unwrap(cancelableArg), _unwrap(keyArg), _unwrap(oldValueArg), _unwrap(newValueArg), _unwrap(urlArg), _unwrap(storageAreaArg));
-    return;
-  }
-}