Change a C++ type to avoid triggering an ASSERT.

runtime/vm/kernel_binary.cc

 // Copyright (c) 2016, 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.
 #if !defined(DART_PRECOMPILED_RUNTIME)
 
 #include "platform/globals.h"
 #include "vm/flags.h"
 #include "vm/growable_array.h"
 #include "vm/kernel.h"
 #include "vm/kernel_to_il.h"
@@ skipping 300 matching lines @@
   void set_labels(BlockStack<LabeledStatement>* labels) { labels_ = labels; }
 
   CanonicalName* GetCanonicalName(int index) { return canonical_names_[index]; }
   void SetCanonicalName(int index, CanonicalName* name) {
     canonical_names_[index] = name;
   }
   void SetCanonicalNameCount(int count) { canonical_names_.SetLength(count); }
 
  private:
   Program* program_;
-  MallocGrowableArray<Ref<CanonicalName> > canonical_names_;
+  MallocGrowableArray<CanonicalName*> canonical_names_;
   BlockStack<VariableDeclaration> scope_;
   BlockStack<TypeParameter> type_parameters_;
   BlockStack<SwitchCase> switch_cases_;
   BlockStack<LabeledStatement>* labels_;
 };
 
 
 class Reader {
  public:
   Reader(const uint8_t* buffer, int64_t size)
@@ skipping 1593 matching lines @@
 
 kernel::Program* ReadPrecompiledKernelFromBuffer(const uint8_t* buffer,
                                                  intptr_t buffer_length) {
   kernel::Reader reader(buffer, buffer_length);
   return kernel::Program::ReadFrom(&reader);
 }
 
 
 }  // namespace dart
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)