Add a weak property type to the virtual machine.

runtime/vm/object_store.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object_store.h"
 
 #include "vm/exceptions.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
@@ skipping 41 matching lines @@
     external_int16_array_class_(Class::null()),
     external_uint16_array_class_(Class::null()),
     external_int32_array_class_(Class::null()),
     external_uint32_array_class_(Class::null()),
     external_int64_array_class_(Class::null()),
     external_uint64_array_class_(Class::null()),
     external_float32_array_class_(Class::null()),
     external_float64_array_class_(Class::null()),
     stacktrace_class_(Class::null()),
     jsregexp_class_(Class::null()),
+    weak_property_class_(Class::null()),
     true_value_(Bool::null()),
     false_value_(Bool::null()),
     empty_array_(Array::null()),
     symbol_table_(Array::null()),
     canonical_type_arguments_(Array::null()),
     core_library_(Library::null()),
     core_impl_library_(Library::null()),
     math_library_(Library::null()),
     isolate_library_(Library::null()),
     mirrors_library_(Library::null()),
@@ skipping 98 matching lines @@
     case kExternalInt16ArrayClass: return external_int16_array_class_;
     case kExternalUint16ArrayClass: return external_uint16_array_class_;
     case kExternalInt32ArrayClass: return external_int32_array_class_;
     case kExternalUint32ArrayClass: return external_uint32_array_class_;
     case kExternalInt64ArrayClass: return external_int64_array_class_;
     case kExternalUint64ArrayClass: return external_uint64_array_class_;
     case kExternalFloat32ArrayClass: return external_float32_array_class_;
     case kExternalFloat64ArrayClass: return external_float64_array_class_;
     case kStacktraceClass: return stacktrace_class_;
     case kJSRegExpClass: return jsregexp_class_;
+    case kWeakPropertyClass: return weak_property_class_;
     default: break;
   }
   UNREACHABLE();
   return Class::null();
 }
 
 
 int ObjectStore::GetClassIndex(const RawClass* raw_class) {
   ASSERT(raw_class->IsHeapObject());
   if (raw_class == object_class_) {
@@ skipping 122 matching lines @@
     return kStringInterface;
   } else if (raw_type == list_interface()) {
     return kListInterface;
   } else if (raw_type == byte_array_interface()) {
     return kByteArrayInterface;
   }
   return kInvalidIndex;
 }
 
 }  // namespace dart