[heap] inline allocation steps refactor

src/heap/spaces.cc

Index: src/heap/spaces.cc
diff --git a/src/heap/spaces.cc b/src/heap/spaces.cc
index 50a213e8ae4f582a3a684b4639c73894616fb851..f4b0ef078e682d318a97f3dbc9069fb0b4436b78 100644
--- a/src/heap/spaces.cc
+++ b/src/heap/spaces.cc
@@ -1412,7 +1412,7 @@ void NewSpace::UpdateInlineAllocationLimit(int size_in_bytes) {
     Address high = to_space_.page_high();
     Address new_top = allocation_info_.top() + size_in_bytes;
     allocation_info_.set_limit(Min(new_top, high));
-  } else if (inline_allocation_limit_step_ == 0) {
+  } else if (top_on_previous_step_ == 0) {

[ofrobots, 2015/10/12 22:39:42]

I did not need to make this change as part of this CL. It is equivalent. It does
pave the way to me remove inline_allocation_limit_step_ completely in a
subsequent CL.

     // Normal limit is the end of the current page.
     allocation_info_.set_limit(to_space_.page_high());
   } else {