[heap] Iterate handles with special left-trim visitor

src/heap/scavenger.cc

Index: src/heap/scavenger.cc
diff --git a/src/heap/scavenger.cc b/src/heap/scavenger.cc
index 9b8bfc248cfb58ffa2b2fcc30f06ccf4d263909f..1346b18236c2da9f24a6e39ab4b12e44c80795a8 100644
--- a/src/heap/scavenger.cc
+++ b/src/heap/scavenger.cc
@@ -445,8 +445,6 @@ void ScavengeVisitor::ScavengePointer(Object** p) {
   Object* object = *p;
   if (!heap_->InNewSpace(object)) return;
 
-  if (heap_->PurgeLeftTrimmedObject(p)) return;
-
   Scavenger::ScavengeObject(reinterpret_cast<HeapObject**>(p),
                             reinterpret_cast<HeapObject*>(object));
 }