[heap] Enforce coding style decl order in {Heap} round #1.

src/heap/gc-tracer.cc

Index: src/heap/gc-tracer.cc
diff --git a/src/heap/gc-tracer.cc b/src/heap/gc-tracer.cc
index a8e0134e7975ca10d2a81af460260a98e1471eb0..06a894acefa9b25295264b222ea7dbe418afced4 100644
--- a/src/heap/gc-tracer.cc
+++ b/src/heap/gc-tracer.cc
@@ -472,9 +472,9 @@ void GCTracer::PrintNVP() const {
   intptr_t allocated_since_last_gc =
       current_.start_object_size - previous_.end_object_size;
   PrintF("allocated=%" V8_PTR_PREFIX "d ", allocated_since_last_gc);
-  PrintF("promoted=%" V8_PTR_PREFIX "d ", heap_->promoted_objects_size_);
+  PrintF("promoted=%" V8_PTR_PREFIX "d ", heap_->promoted_objects_size());
   PrintF("semi_space_copied=%" V8_PTR_PREFIX "d ",
-         heap_->semi_space_copied_object_size_);
+         heap_->semi_space_copied_object_size());
   PrintF("nodes_died_in_new=%d ", heap_->nodes_died_in_new_space_);
   PrintF("nodes_copied_in_new=%d ", heap_->nodes_copied_in_new_space_);
   PrintF("nodes_promoted=%d ", heap_->nodes_promoted_);