[heap] inline allocation steps refactor

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 75b7ec1fa698f824e2e82c57da0cb9947132b08f..38868156cd2d363bd1ee6df0ce99646b34aec701 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -781,6 +781,13 @@ void Heap::HandleGCRequest() {
 }
 
 
+void Heap::ScheduleIdleScavengeIfNeededCallback(int bytes_allocated,
+                                                void* arg) {
+  Heap* heap = static_cast<Heap*>(arg);
+  heap->ScheduleIdleScavengeIfNeeded(bytes_allocated);
+}
+
+
 void Heap::ScheduleIdleScavengeIfNeeded(int bytes_allocated) {
   scavenge_job_->ScheduleIdleTaskIfNeeded(this, bytes_allocated);
 }
@@ -4971,17 +4978,6 @@ void Heap::DisableInlineAllocation() {
 }
 
 
-void Heap::LowerInlineAllocationLimit(intptr_t step) {
-  new_space()->LowerInlineAllocationLimit(step);
-}
-
-
-void Heap::ResetInlineAllocationLimit() {
-  new_space()->LowerInlineAllocationLimit(
-      ScavengeJob::kBytesAllocatedBeforeNextIdleTask);
-}
-
-
 V8_DECLARE_ONCE(initialize_gc_once);
 
 static void InitializeGCOnce() {
@@ -5090,7 +5086,9 @@ bool Heap::SetUp() {
 
   mark_compact_collector()->SetUp();
 
-  ResetInlineAllocationLimit();
+  new_space()->AddInlineAllocationObserver(
+      ScavengeJob::kBytesAllocatedBeforeNextIdleTask,
+      ScheduleIdleScavengeIfNeededCallback, this);
 
   return true;
 }