[runtime] Remove PropertyType definition and use PropertyKind/PropertyLocation instead.

src/property-details.h

Index: src/property-details.h
diff --git a/src/property-details.h b/src/property-details.h
index 02354b89babc79616f0733b944b4ec3ca3f14e25..d616ae76e164c1768d8cd35b2ae7a4603e760f27 100644
--- a/src/property-details.h
+++ b/src/property-details.h
@@ -72,18 +72,6 @@ enum PropertyKind { kData = 0, kAccessor = 1 };
 // Must fit in the BitField PropertyDetails::LocationField.
 enum PropertyLocation { kField = 0, kDescriptor = 1 };
 
-
-// Order of properties is significant.
-// Must fit in the BitField PropertyDetails::TypeField.
-// A copy of this is in debug/mirrors.js.
-enum PropertyType {
-  DATA = (kField << 1) | kData,
-  DATA_CONSTANT = (kDescriptor << 1) | kData,
-  ACCESSOR = (kField << 1) | kAccessor,
-  ACCESSOR_CONSTANT = (kDescriptor << 1) | kAccessor
-};
-
-
 class Representation {
  public:
   enum Kind {
@@ -298,8 +286,6 @@ class PropertyDetails BASE_EMBEDDED {
   PropertyKind kind() const { return KindField::decode(value_); }
   PropertyLocation location() const { return LocationField::decode(value_); }
 
-  PropertyType type() const { return TypeField::decode(value_); }
-
   PropertyAttributes attributes() const {
     return AttributesField::decode(value_);
   }
@@ -348,12 +334,6 @@ class PropertyDetails BASE_EMBEDDED {
       : public BitField<uint32_t, 9 + kDescriptorIndexBitCount,
                         kDescriptorIndexBitCount> {};  // NOLINT
 
-  // NOTE: TypeField overlaps with KindField and LocationField.
-  class TypeField : public BitField<PropertyType, 0, 2> {};
-  STATIC_ASSERT(KindField::kNext == LocationField::kShift);
-  STATIC_ASSERT(TypeField::kShift == KindField::kShift);
-  STATIC_ASSERT(TypeField::kNext == LocationField::kNext);
-
   // All bits for both fast and slow objects must fit in a smi.
   STATIC_ASSERT(DictionaryStorageField::kNext <= 31);
   STATIC_ASSERT(FieldIndexField::kNext <= 31);