Add a premonomorphic state to the call target cache.

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
===================================================================
--- test/cctest/test-heap.cc	(revision 19345)
+++ test/cctest/test-heap.cc	(working copy)
@@ -2848,7 +2848,9 @@
   // originating from two different native contexts.
   CcTest::global()->Set(v8_str("fun1"), fun1);
   CcTest::global()->Set(v8_str("fun2"), fun2);
-  CompileRun("function f(a, b) { a(); b(); } f(fun1, fun2);");
+  CompileRun("function f(a, b) { a(); b(); }"
+             "f(fun1, fun2);"  // Run twice to skip premonomorphic state.
+             "f(fun1, fun2)");
 
   Handle<JSFunction> f =
       v8::Utils::OpenHandle(