Add a first class GrowableObjectArray type in the VM and use it internally in the VM at all spots w…

vm/object_store.cc

Index: vm/object_store.cc
===================================================================
--- vm/object_store.cc	(revision 5060)
+++ vm/object_store.cc	(working copy)
@@ -34,6 +34,7 @@
     list_interface_(Type::null()),
     array_class_(Class::null()),
     immutable_array_class_(Class::null()),
+    growable_object_array_class_(Class::null()),
     byte_array_interface_(Type::null()),
     internal_byte_array_class_(Class::null()),
     external_byte_array_class_(Class::null()),
@@ -49,7 +50,7 @@
     native_wrappers_library_(Library::null()),
     root_library_(Library::null()),
     registered_libraries_(Library::null()),
-    pending_classes_(Array::null()),
+    pending_classes_(GrowableObjectArray::null()),
     sticky_error_(Error::null()),
     empty_context_(Context::null()),
     stack_overflow_(Instance::null()),
@@ -131,6 +132,7 @@
     case kBoolClass: return bool_class_;
     case kArrayClass: return array_class_;
     case kImmutableArrayClass: return immutable_array_class_;
+    case kGrowableObjectArrayClass: return growable_object_array_class_;
     case kInternalByteArrayClass: return internal_byte_array_class_;
     case kExternalByteArrayClass: return external_byte_array_class_;
     case kStacktraceClass: return stacktrace_class_;
@@ -172,6 +174,8 @@
     return kArrayClass;
   } else if (raw_class == immutable_array_class_) {
     return kImmutableArrayClass;
+  } else if (raw_class == growable_object_array_class_) {
+    return kGrowableObjectArrayClass;
   } else if (raw_class == internal_byte_array_class_) {
     return kInternalByteArrayClass;
   } else if (raw_class == external_byte_array_class_) {