Remove generated directories with 100s of files.

client/dom/templates/html/frog/html_frog.darttemplate

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // DO NOT EDIT
 // Auto-generated dart:html library.
 
 #library("html");
 
 $!GENERATED_DART_FILES
 
-#source('../dom/src/EventListener.dart');
-#source('../dom/src/KeyLocation.dart');
-#source('../dom/src/KeyName.dart');
-#source('../dom/src/ReadyState.dart');
-#source('../dom/src/TimeoutHandler.dart');
-#source('../dom/src/_Collections.dart');
-#source('../dom/src/_XMLHttpRequestUtils.dart');
-#source('../html/src/Measurement.dart');
-#source('../html/src/shared_FactoryProviders.dart');
-#source('../html/src/frog_FactoryProviders.dart');
-#source('../html/src/_Testing.dart');
-#source('../html/src/Device.dart');
-#source('../dom/src/_ListIterators.dart');
-#source('../dom/src/_Lists.dart');
+#source('../../dom/src/EventListener.dart');
+#source('../../dom/src/KeyLocation.dart');
+#source('../../dom/src/KeyName.dart');
+#source('../../dom/src/ReadyState.dart');
+#source('../../dom/src/TimeoutHandler.dart');
+#source('../../dom/src/_Collections.dart');
+#source('../../dom/src/_XMLHttpRequestUtils.dart');
+#source('../../html/src/Measurement.dart');
+#source('../../html/src/shared_FactoryProviders.dart');
+#source('../../html/src/frog_FactoryProviders.dart');
+#source('../../html/src/_Testing.dart');
+#source('../../html/src/Device.dart');
+#source('../../dom/src/_ListIterators.dart');
+#source('../../dom/src/_Lists.dart');
 
 _WindowImpl _cachedWindow;
 _DocumentImpl _cachedDocument;
 
 void _init() {
   _cachedDocument = _document;
   _cachedWindow = _window;
   // Feature detect that dart:dom and dart:html are not both loaded by
   // checking for the presence of a bug that manifests itself when both
   // libraries are loaded.
@@ skipping 25 matching lines @@
   }
   return _cachedDocument;
 }
 
 _DocumentImpl get _document() native "return window.document.documentElement;";
 
 // Workaround for tags like <cite> that lack their own Element subclass --
 // Dart issue 1990.
 class _HTMLElementImpl extends _ElementImpl native "*HTMLElement" {
 }