Move of the type feedback vector to the closure.

src/type-feedback-vector-inl.h

Index: src/type-feedback-vector-inl.h
diff --git a/src/type-feedback-vector-inl.h b/src/type-feedback-vector-inl.h
index 015104e96a538a396a515f38c98faa7d4b4cc306..02a567bb350ddeb1f2c2486771e8ac737cef4c63 100644
--- a/src/type-feedback-vector-inl.h
+++ b/src/type-feedback-vector-inl.h
@@ -32,6 +32,10 @@ TypeFeedbackMetadata* TypeFeedbackMetadata::cast(Object* obj) {
   return reinterpret_cast<TypeFeedbackMetadata*>(obj);
 }
 
+bool TypeFeedbackMetadata::is_empty() const {
+  if (length() == 0) return true;
+  return false;
+}
 
 int TypeFeedbackMetadata::slot_count() const {
   if (length() == 0) return 0;
@@ -80,17 +84,17 @@ FeedbackVectorSlotKind TypeFeedbackVector::GetKind(
   return metadata()->GetKind(slot);
 }
 
-
-int TypeFeedbackVector::GetIndex(FeedbackVectorSlot slot) const {
-  DCHECK(slot.ToInt() < slot_count());
+// static
+int TypeFeedbackVector::GetIndex(FeedbackVectorSlot slot) {
   return kReservedIndexCount + slot.ToInt();
 }
 
 
 // Conversion from an integer index to either a slot or an ic slot. The caller
 // should know what kind she expects.
-FeedbackVectorSlot TypeFeedbackVector::ToSlot(int index) const {
-  DCHECK(index >= kReservedIndexCount && index < length());
+// static
+FeedbackVectorSlot TypeFeedbackVector::ToSlot(int index) {
+  DCHECK(index >= kReservedIndexCount);
   return FeedbackVectorSlot(index - kReservedIndexCount);
 }