Increase default type info threshold.

R=jkummerow@chromium.org
BUG=v8:2730

Review URL: https://chromiumcodereview.appspot.com/17074002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15157 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/flag-definitions.h

@@ -317,7 +317,7 @@ DEFINE_bool(weighted_back_edges, false,
            // 0x1700 fits in the immediate field of an ARM instruction.
 DEFINE_int(interrupt_budget, 0x1700,
            "execution budget before interrupt is triggered")
-DEFINE_int(type_info_threshold, 15,
+DEFINE_int(type_info_threshold, 30,
            "percentage of ICs that must have type info to allow optimization")
 DEFINE_int(self_opt_count, 130, "call count before self-optimization")