Add --dart-flags and --disable-dart command line switches.

webkit/glue/webpreferences.cc

Index: webkit/glue/webpreferences.cc
diff --git a/webkit/glue/webpreferences.cc b/webkit/glue/webpreferences.cc
index 5d36a3747a51ee9c2f22e71e83c1138d0f6bba60..441977630aef037d2b8d089de7fffd83569ee6b2 100644
--- a/webkit/glue/webpreferences.cc
+++ b/webkit/glue/webpreferences.cc
@@ -38,6 +38,7 @@ WebPreferences::WebPreferences()
       minimum_logical_font_size(6),
       default_encoding("ISO-8859-1"),
       javascript_enabled(true),
+      dart_enabled(true),
       web_security_enabled(true),
       javascript_can_open_windows_automatically(true),
       loads_images_automatically(true),
@@ -179,6 +180,9 @@ void WebPreferences::Apply(WebView* web_view) const {
   settings->setMinimumLogicalFontSize(minimum_logical_font_size);
   settings->setDefaultTextEncodingName(ASCIIToUTF16(default_encoding));
   settings->setJavaScriptEnabled(javascript_enabled);
+#if WEBKIT_USING_DART
+  settings->setDartEnabled(dart_enabled);
+#endif
   settings->setWebSecurityEnabled(web_security_enabled);
   settings->setJavaScriptCanOpenWindowsAutomatically(
       javascript_can_open_windows_automatically);