Replace SetObjectProperty / DefineObjectProperty with less powerful alternatives where relevant.

src/lookup.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_LOOKUP_H_
 #define V8_LOOKUP_H_
 
 #include "src/factory.h"
 #include "src/isolate.h"
 #include "src/objects.h"
@@ skipping 41 matching lines @@
         property_details_(PropertyDetails::Empty()),
         isolate_(name->GetIsolate()),
         name_(name),
         // kMaxUInt32 isn't a valid index.
         index_(kMaxUInt32),
         receiver_(receiver),
         holder_(GetRoot(receiver_, isolate_)),
         holder_map_(holder_->map(), isolate_),
         initial_holder_(holder_),
         number_(DescriptorArray::kNotFound) {
-#if 0  // TODO(verwaest): Enable once blocking hacks are removed.
 #ifdef DEBUG
     uint32_t index;  // Assert that the name is not an array index.
     DCHECK(!name->AsArrayIndex(&index));
 #endif  // DEBUG
-#endif
     Next();
   }
 
   LookupIterator(Handle<Object> receiver, Handle<Name> name,
                  Handle<JSReceiver> holder,
                  Configuration configuration = PROTOTYPE_CHAIN)
       : configuration_(ComputeConfiguration(configuration, name)),
         state_(NOT_FOUND),
         exotic_index_state_(ExoticIndexState::kUninitialized),
         interceptor_state_(InterceptorState::kUninitialized),
         property_details_(PropertyDetails::Empty()),
         isolate_(name->GetIsolate()),
         name_(name),
         // kMaxUInt32 isn't a valid index.
         index_(kMaxUInt32),
         receiver_(receiver),
         holder_(holder),
         holder_map_(holder_->map(), isolate_),
         initial_holder_(holder_),
         number_(DescriptorArray::kNotFound) {
-#if 0  // TODO(verwaest): Enable once blocking hacks are removed.
 #ifdef DEBUG
     uint32_t index;  // Assert that the name is not an array index.
     DCHECK(!name->AsArrayIndex(&index));
 #endif  // DEBUG
-#endif
     Next();
   }
 
   LookupIterator(Isolate* isolate, Handle<Object> receiver, uint32_t index,
                  Configuration configuration = PROTOTYPE_CHAIN)
       : configuration_(configuration),
         state_(NOT_FOUND),
         exotic_index_state_(ExoticIndexState::kUninitialized),
         interceptor_state_(InterceptorState::kUninitialized),
         property_details_(PropertyDetails::Empty()),
@@ skipping 101 matching lines @@
     return property_details().representation();
   }
   FieldIndex GetFieldIndex() const;
   Handle<HeapType> GetFieldType() const;
   int GetAccessorIndex() const;
   int GetConstantIndex() const;
   Handle<PropertyCell> GetPropertyCell() const;
   Handle<Object> GetAccessors() const;
   Handle<InterceptorInfo> GetInterceptor() const;
   Handle<Object> GetDataValue() const;
-  // Usually returns the value that was passed in. In case of typed array
-  // accesses it returns the converted value.
-  Handle<Object> WriteDataValue(Handle<Object> value);
+  void WriteDataValue(Handle<Object> value);
   void InternalizeName();
 
  private:
   enum class InterceptorState {
     kUninitialized,
     kSkipNonMasking,
     kProcessNonMasking
   };
 
   Handle<Map> GetReceiverMap() const;
@@ skipping 58 matching lines @@
   Handle<JSReceiver> holder_;
   Handle<Map> holder_map_;
   const Handle<JSReceiver> initial_holder_;
   uint32_t number_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_LOOKUP_H_