- Remove redundant assertion.

runtime/vm/handles.h

 // Copyright (c) 2011, 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_HANDLES_H_
 #define VM_HANDLES_H_
 
 #include "vm/allocation.h"
+#include "vm/flags.h"
 
 namespace dart {
 
 // Handles are used in the Dart Virtual Machine to ensure that access
 // to dart objects in the virtual machine code is done in a
 // Garbage Collection safe manner.
 //
 // The class Handles is the basic type that implements creation of handles and
 // manages their life cycle (allocated either in the current zone or
 // current handle scope).
@@ skipping 31 matching lines @@
 // {
 //   NOHANDLESCOPE(isolate);
 //   ....
 //   ....
 // }
 
 
 // Forward declarations.
 class ObjectPointerVisitor;
 
+DECLARE_FLAG(bool, verify_handles);
 
 class HandleVisitor {
  public:
   virtual void VisitHandle(uword addr) = 0;
 
   virtual ~HandleVisitor() {
   }
 };
 
 
@@ skipping 247 matching lines @@
 };
 #endif  // defined(DEBUG)
 
 // Macro to start a no handles scope in the code.
 #define NOHANDLESCOPE(isolate)                                                \
     dart::NoHandleScope no_vm_internal_handles_scope_(isolate);
 
 }  // namespace dart
 
 #endif  // VM_HANDLES_H_