Revert of Reland "[heap] Fine-grained JSArrayBuffer tracking"

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 5499bd0784769847f2415d5f92f3ce9a4c1188b4..ea25bdb69869208c12021b3c6ba1bf4e663efd56 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -160,6 +160,7 @@
       gc_callbacks_depth_(0),
       deserialization_complete_(false),
       strong_roots_list_(NULL),
+      array_buffer_tracker_(NULL),
       heap_iterator_depth_(0),
       force_oom_(false) {
 // Allow build-time customization of the max semispace size. Building
@@ -1625,6 +1626,8 @@
 
   scavenge_collector_->SelectScavengingVisitorsTable();
 
+  array_buffer_tracker()->PrepareDiscoveryInNewSpace();
+
   // Flip the semispaces.  After flipping, to space is empty, from space has
   // live objects.
   new_space_.Flip();
@@ -1744,7 +1747,7 @@
   // Set age mark.
   new_space_.set_age_mark(new_space_.top());
 
-  ArrayBufferTracker::FreeDeadInNewSpace(this);
+  array_buffer_tracker()->FreeDead(true);
 
   // Update how much has survived scavenge.
   IncrementYoungSurvivorsCounter(static_cast<int>(
@@ -2024,12 +2027,12 @@
 
 
 void Heap::RegisterNewArrayBuffer(JSArrayBuffer* buffer) {
-  ArrayBufferTracker::RegisterNew(this, buffer);
+  return array_buffer_tracker()->RegisterNew(buffer);
 }
 
 
 void Heap::UnregisterArrayBuffer(JSArrayBuffer* buffer) {
-  ArrayBufferTracker::Unregister(this, buffer);
+  return array_buffer_tracker()->Unregister(buffer);
 }
 
 
@@ -5322,6 +5325,8 @@
 
   scavenge_job_ = new ScavengeJob();
 
+  array_buffer_tracker_ = new ArrayBufferTracker(this);
+
   LOG(isolate_, IntPtrTEvent("heap-capacity", Capacity()));
   LOG(isolate_, IntPtrTEvent("heap-available", Available()));
 
@@ -5480,6 +5485,9 @@
 
   delete scavenge_job_;
   scavenge_job_ = nullptr;
+
+  delete array_buffer_tracker_;
+  array_buffer_tracker_ = nullptr;
 
   isolate_->global_handles()->TearDown();