Ensure that we are getting steps from inline allocation when doing incremental sweeping.

src/incremental-marking.cc

Index: src/incremental-marking.cc
diff --git a/src/incremental-marking.cc b/src/incremental-marking.cc
index 82484f0982144555c731eb4d15b203a5a9492308..913dee79f6d52577b22af279f618e89ba0dae598 100644
--- a/src/incremental-marking.cc
+++ b/src/incremental-marking.cc
@@ -244,6 +244,8 @@ void IncrementalMarking::Start() {
     }
     state_ = SWEEPING;
   }
+
+  heap_->new_space()->LowerInlineAllocationLimit(kAllocatedThreshold);
 }
 
 
@@ -275,8 +277,6 @@ void IncrementalMarking::StartMarking() {
   VerifyMarkbitsAreClean();
 #endif
 
-  heap_->new_space()->LowerInlineAllocationLimit(kAllocatedThreshold);
-
   // Mark strong roots grey.
   IncrementalMarkingRootMarkingVisitor visitor(heap_, this);
   heap_->IterateStrongRoots(&visitor, VISIT_ONLY_STRONG);