A change in the way we place TransitionElementKinds in the tree.

src/small-pointer-list.h

Index: src/small-pointer-list.h
diff --git a/src/small-pointer-list.h b/src/small-pointer-list.h
index 295a06f26afc50bc39f81a21f777f3e1b922b4de..21d9e0671595a76dac9cf780b21b2504fe21f517 100644
--- a/src/small-pointer-list.h
+++ b/src/small-pointer-list.h
@@ -126,6 +126,16 @@ class SmallPointerList {
     list()->RemoveElement(pointer);
   }
 
+  void RemoveAt(int i) {
+    if ((data_ & kTagMask) == kEmptyTag) return;
+    if ((data_ & kTagMask) == kSingletonTag) {
+      ASSERT(i == 0);
+      data_ = kEmptyTag;
+      return;
+    }
+    list()->Remove(i);
+  }
+
   T* RemoveLast() {
     ASSERT((data_ & kTagMask) != kEmptyTag);
     if ((data_ & kTagMask) == kSingletonTag) {