WIP SharedArrayBuffer implementation

src/accessors.cc

Index: src/accessors.cc
diff --git a/src/accessors.cc b/src/accessors.cc
index fd770ea16be5bc1befe01daab72b26d041c0010b..c69ae081195e28b898b7ead55c784d37cfb8b313 100644
--- a/src/accessors.cc
+++ b/src/accessors.cc
@@ -79,6 +79,7 @@ bool Accessors::IsJSObjectFieldAccessor(Handle<Map> map, Handle<Name> name,
         CheckForName(name, isolate->factory()->length_string(),
                      JSArray::kLengthOffset, object_offset);
     case JS_TYPED_ARRAY_TYPE:
+    case JS_SHARED_TYPED_ARRAY_TYPE:
       // %TypedArray%.prototype is non-configurable, and so are the following
       // named properties on %TypedArray%.prototype, so we can directly inline
       // the field-load for typed array maps that still use their
@@ -95,6 +96,7 @@ bool Accessors::IsJSObjectFieldAccessor(Handle<Map> map, Handle<Name> name,
         CheckForName(name, isolate->factory()->byte_offset_string(),
                      JSTypedArray::kByteOffsetOffset, object_offset);
     case JS_ARRAY_BUFFER_TYPE:
+    case JS_SHARED_ARRAY_BUFFER_TYPE:
       return
         CheckForName(name, isolate->factory()->byte_length_string(),
                      JSArrayBuffer::kByteLengthOffset, object_offset);