A64: Synchronize with r15358.

src/zone-inl.h

Index: src/zone-inl.h
diff --git a/src/zone-inl.h b/src/zone-inl.h
index e312b20899d12db432a174696b212d1f4127a0b8..49e7626f74ecbc4a63bd48a1daeb57a78a37489f 100644
--- a/src/zone-inl.h
+++ b/src/zone-inl.h
@@ -40,7 +40,6 @@ namespace internal {
 
 
 inline void* Zone::New(int size) {
-  ASSERT(scope_nesting_ > 0);
   // Round up the requested size to fit the alignment.
   size = RoundUp(size, kAlignment);
 
@@ -75,7 +74,7 @@ T* Zone::NewArray(int length) {
 
 
 bool Zone::excess_allocation() {
-  return segment_bytes_allocated_ > zone_excess_limit_;
+  return segment_bytes_allocated_ > kExcessLimit;
 }
 
 
@@ -110,17 +109,6 @@ void* ZoneList<T>::operator new(size_t size, Zone* zone) {
 }
 
 
-ZoneScope::ZoneScope(Zone* zone, ZoneScopeMode mode)
-    : zone_(zone), mode_(mode) {
-  zone_->scope_nesting_++;
-}
-
-
-bool ZoneScope::ShouldDeleteOnExit() {
-  return zone_->scope_nesting_ == 1 && mode_ == DELETE_ON_EXIT;
-}
-
-
 } }  // namespace v8::internal
 
 #endif  // V8_ZONE_INL_H_