Make ImmutableArray a sub class of AllStatic.

runtime/vm/snapshot.cc

 // Copyright (c) 2012, 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/snapshot.h"
 
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
 #include "vm/class_finalizer.h"
@@ skipping 15 matching lines @@
   // Check if this is a singleton object class which is shared by all isolates.
   return ((class_id >= kClassCid && class_id <= kUnwindErrorCid) ||
           (class_id >= kNullCid && class_id <= kVoidCid));
 }
 
 
 static bool IsObjectStoreClassId(intptr_t class_id) {
   // Check if this is a class which is stored in the object store.
   return (class_id == kObjectCid ||
           (class_id >= kInstanceCid && class_id <= kWeakPropertyCid) ||
+          class_id == kArrayCid ||
+          class_id == kImmutableArrayCid ||
           RawObject::IsStringClassId(class_id) ||
           RawObject::IsTypedDataClassId(class_id) ||
           RawObject::IsExternalTypedDataClassId(class_id));
 }
 
 
 static bool IsObjectStoreTypeId(intptr_t index) {
   // Check if this is a type which is stored in the object store.
   return (index >= kObjectType && index <= kArrayType);
 }
@@ skipping 243 matching lines @@
         isolate(),
         ((kind_ == Snapshot::kFull) ?
          NewArray(len) : Array::New(len, HEAP_SPACE(kind_))));
     AddBackRef(object_id, &array, kIsNotDeserialized);
 
     return array.raw();
   }
   if (class_id == kImmutableArrayCid) {
     // Read the length and allocate an object based on the len.
     intptr_t len = ReadSmiValue();
-    ImmutableArray& array = ImmutableArray::ZoneHandle(
+    Array& array = Array::ZoneHandle(
         isolate(),
         (kind_ == Snapshot::kFull) ?
         NewImmutableArray(len) : ImmutableArray::New(len, HEAP_SPACE(kind_)));
     AddBackRef(object_id, &array, kIsNotDeserialized);
 
     return array.raw();
   }
 
   // For all other internal VM classes we read the object inline.
   intptr_t tags = ReadIntptrValue();
@@ skipping 1153 matching lines @@
     UnmarkAll();
     isolate->set_long_jump_base(base);
   } else {
     isolate->set_long_jump_base(base);
     ThrowException(exception_type(), exception_msg());
   }
 }
 
 
 }  // namespace dart