- Inline the store buffer update into a stub instead of

runtime/vm/store_buffer.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 VM_STORE_BUFFER_H_
 #define VM_STORE_BUFFER_H_
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 
@@ skipping 17 matching lines @@
     ASSERT(top_ < kSize);
     pointers_[top_++] = pointer;
     if (top_ == kSize) {
       ProcessBuffer();
     }
   }
 
   // Process this store buffer and remember its contents in the heap.
   void ProcessBuffer();
 
+  bool Contains(uword pointer);
+
  private:
   int32_t top_;
   uword pointers_[kSize];
 };
 
 }  // namespace dart
 
 #endif  // VM_STORE_BUFFER_H_