Flesh out vector ic state query and set mechanisms.

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index 9bda713a0e71bac3fb0676122e866eaec406e062..218d3b9625880164cc77add838d537432871f628 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -2014,9 +2014,9 @@ void Factory::BecomeJSFunction(Handle<JSProxy> proxy) {
 }
 
 
-Handle<TypeFeedbackVector> Factory::NewTypeFeedbackVector(int slot_count,
-                                                          int ic_slot_count) {
-  return TypeFeedbackVector::Allocate(isolate(), slot_count, ic_slot_count);
+Handle<TypeFeedbackVector> Factory::NewTypeFeedbackVector(
+    const FeedbackVectorSpec& spec) {
+  return TypeFeedbackVector::Allocate(isolate(), spec);
 }
 
 
@@ -2091,7 +2091,9 @@ Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(
   share->set_script(*undefined_value(), SKIP_WRITE_BARRIER);
   share->set_debug_info(*undefined_value(), SKIP_WRITE_BARRIER);
   share->set_inferred_name(*empty_string(), SKIP_WRITE_BARRIER);
-  Handle<TypeFeedbackVector> feedback_vector = NewTypeFeedbackVector(0, 0);
+  FeedbackVectorSpec empty_spec;
+  Handle<TypeFeedbackVector> feedback_vector =
+      NewTypeFeedbackVector(empty_spec);
   share->set_feedback_vector(*feedback_vector, SKIP_WRITE_BARRIER);
 #if TRACE_MAPS
   share->set_unique_id(isolate()->GetNextUniqueSharedFunctionInfoId());