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

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
===================================================================
--- chrome/common/render_messages.h	(revision 27632)
+++ chrome/common/render_messages.h	(working copy)
@@ -1650,6 +1650,7 @@
     WriteParam(m, p.databases_enabled);
     WriteParam(m, p.session_storage_enabled);
     WriteParam(m, p.application_cache_enabled);
+    WriteParam(m, p.experimental_webgl_enabled);
   }
   static bool Read(const Message* m, void** iter, param_type* p) {
     return
@@ -1684,7 +1685,8 @@
         ReadParam(m, iter, &p->local_storage_enabled) &&
         ReadParam(m, iter, &p->databases_enabled) &&
         ReadParam(m, iter, &p->session_storage_enabled) &&
-        ReadParam(m, iter, &p->application_cache_enabled);
+        ReadParam(m, iter, &p->application_cache_enabled) &&
+        ReadParam(m, iter, &p->experimental_webgl_enabled);
   }
   static void Log(const param_type& p, std::wstring* l) {
     l->append(L"<WebPreferences>");