Added command line argument --enable-webgl to facilitate turning on...

webkit/glue/webpreferences.cc

Index: webkit/glue/webpreferences.cc
===================================================================
--- webkit/glue/webpreferences.cc	(revision 27632)
+++ webkit/glue/webpreferences.cc	(working copy)
@@ -75,6 +75,10 @@
   // but also because it cause a possible crash in Editor::hasBidiSelection().
   settings->setTextDirectionSubmenuInclusionBehaviorNeverIncluded();
 
+  // Enable experimental WebGL support if requested on command line
+  // and support is compiled in.
+  settings->setExperimentalWebGLEnabled(experimental_webgl_enabled);
+
   // Web inspector settings need to be passed in differently.
   web_view->SetInspectorSettings(inspector_settings);