PropertyDetails cleanup: NORMAL property type merged with FIELD.

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 9294a8c7c6e10587120776f6b472eb2b79ffdc0f..729ce02527f44730c52bb3cfb623203c68fd5091 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -1699,11 +1699,12 @@ void MacroAssembler::LoadFromNumberDictionary(Label* miss,
   }
 
   bind(&done);
-  // Check that the value is a normal property.
+  // Check that the value is a field property.
   // t2: elements + (index * kPointerSize)
   const int kDetailsOffset =
       SeededNumberDictionary::kElementsStartOffset + 2 * kPointerSize;
   ldr(t1, FieldMemOperand(t2, kDetailsOffset));
+  DCHECK_EQ(FIELD, 0);
   tst(t1, Operand(Smi::FromInt(PropertyDetails::TypeField::kMask)));
   b(ne, miss);