Revert of Reland of "Fix memory leak caused by field type in descriptor array."

test/cctest/test-migrations.cc

Index: test/cctest/test-migrations.cc
diff --git a/test/cctest/test-migrations.cc b/test/cctest/test-migrations.cc
index 3be173453a5b407b6614af55f0dd348594df0030..443e8e1585fe365f0daebc40f6a60c5564f08d78 100644
--- a/test/cctest/test-migrations.cc
+++ b/test/cctest/test-migrations.cc
@@ -233,14 +233,12 @@ class Expectations {
                       representations_[descriptor])) {
       return false;
     }
-    Object* value = descriptors->GetValue(descriptor);
     Object* expected_value = *values_[descriptor];
+    Object* value = descriptors->GetValue(descriptor);
     switch (type) {
       case DATA:
-      case ACCESSOR: {
-        HeapType* type = descriptors->GetFieldType(descriptor);
-        return HeapType::cast(expected_value)->Equals(type);
-      }
+      case ACCESSOR:
+        return HeapType::cast(expected_value)->Equals(HeapType::cast(value));
 
       case DATA_CONSTANT:
         return value == expected_value;