Enable DOM_STORAGE in our build.

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
===================================================================
--- chrome/common/render_messages.h	(revision 21124)
+++ chrome/common/render_messages.h	(working copy)
@@ -1529,6 +1529,8 @@
     WriteParam(m, p.uses_page_cache);
     WriteParam(m, p.remote_fonts_enabled);
     WriteParam(m, p.xss_auditor_enabled);
+    WriteParam(m, p.local_storage_enabled);
+    WriteParam(m, p.session_storage_enabled);
   }
   static bool Read(const Message* m, void** iter, param_type* p) {
     return
@@ -1559,7 +1561,9 @@
         ReadParam(m, iter, &p->user_style_sheet_location) &&
         ReadParam(m, iter, &p->uses_page_cache) &&
         ReadParam(m, iter, &p->remote_fonts_enabled) &&
-        ReadParam(m, iter, &p->xss_auditor_enabled);
+        ReadParam(m, iter, &p->xss_auditor_enabled) &&
+        ReadParam(m, iter, &p->local_storage_enabled) &&
+        ReadParam(m, iter, &p->session_storage_enabled);
   }
   static void Log(const param_type& p, std::wstring* l) {
     l->append(L"<WebPreferences>");