Fix wrong ASSERT

runtime/bin/dartutils.h

 // 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.
 
 #ifndef BIN_DARTUTILS_H_
 #define BIN_DARTUTILS_H_
 
 #include "bin/builtin.h"
 #include "bin/utils.h"
 #include "include/dart_api.h"
@@ skipping 188 matching lines @@
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(DartUtils);
 };
 
 
 class CObject {
  public:
   explicit CObject(Dart_CObject *cobject) : cobject_(cobject) {}
   Dart_CObject::Type type() { return cobject_->type; }
   Dart_CObject::TypedDataType byte_array_type() {
-    ASSERT(type() == Dart_CObject::kTypedData);
+    ASSERT(type() == Dart_CObject::kTypedData ||
+           type() == Dart_CObject::kExternalTypedData);
     return cobject_->value.as_typed_data.type;
   }
 
   bool IsNull() { return type() == Dart_CObject::kNull; }
   bool IsBool() { return type() == Dart_CObject::kBool; }
   bool IsInt32() { return type() == Dart_CObject::kInt32; }
   bool IsInt64() { return type() == Dart_CObject::kInt64; }
   bool IsInt32OrInt64() { return IsInt32() || IsInt64(); }
   bool IsIntptr() { return IsInt32OrInt64(); }
   bool IsBigint() { return type() == Dart_CObject::kBigint; }
@@ skipping 267 matching lines @@
   void* Peer() const { return cobject_->value.as_external_typed_data.peer; }
   Dart_WeakPersistentHandleFinalizer Callback() const {
     return cobject_->value.as_external_typed_data.callback;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CObjectExternalUint8Array);
 };
 
 #endif  // BIN_DARTUTILS_H_