Moves the top_ and end_ words of the Scavenger into mutator thread.

runtime/vm/heap.cc

Index: runtime/vm/heap.cc
diff --git a/runtime/vm/heap.cc b/runtime/vm/heap.cc
index 975d0d55c27a38cdea105418f05c13953f0103a2..5eae22f617dce1a814c87eaa9e77d760270f9c14 100644
--- a/runtime/vm/heap.cc
+++ b/runtime/vm/heap.cc
@@ -489,26 +489,6 @@ void Heap::WriteProtect(bool read_only) {
 }
 
 
-intptr_t Heap::TopOffset(Heap::Space space) {
-  if (space == kNew) {
-    return OFFSET_OF(Heap, new_space_) + Scavenger::top_offset();
-  } else {
-    ASSERT(space == kOld);
-    return OFFSET_OF(Heap, old_space_) + PageSpace::top_offset();
-  }
-}
-
-
-intptr_t Heap::EndOffset(Heap::Space space) {
-  if (space == kNew) {
-    return OFFSET_OF(Heap, new_space_) + Scavenger::end_offset();
-  } else {
-    ASSERT(space == kOld);
-    return OFFSET_OF(Heap, old_space_) + PageSpace::end_offset();
-  }
-}
-
-
 void Heap::Init(Isolate* isolate,
                 intptr_t max_new_gen_words,
                 intptr_t max_old_gen_words,