Clean up mark-compact phases and GC counter names.

src/heap/mark-compact.h

Index: src/heap/mark-compact.h
diff --git a/src/heap/mark-compact.h b/src/heap/mark-compact.h
index f4983a7273e066b383542a097de315bf74e7b640..e83dcfb898f3a4d7347b59bdca591a8dfc2b44d6 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -574,8 +574,6 @@ class MarkCompactCollector {
   // Marking operations for objects reachable from roots.
   void MarkLiveObjects();
 
-  void AfterMarking();
-
   // Pushes a black object onto the marking stack and accounts for live bytes.
   // Note that this assumes live bytes have not yet been counted.
   INLINE(void PushBlack(HeapObject* obj));
@@ -716,6 +714,8 @@ class MarkCompactCollector {
 
   void EvacuateNewSpaceAndCandidates();
 
+  void UpdatePointersAfterEvacuation();
+
   // Iterates through all live objects on a page using marking information.
   // Returns whether all objects have successfully been visited.
   bool VisitLiveObjects(MemoryChunk* page, HeapObjectVisitor* visitor,