| Index: src/isolate.h
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| diff --git a/src/isolate.h b/src/isolate.h
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| index 54d313fb5d3fb27f208a9cbe4246f2285698bf3f..bc38fbf59f81bcfdd289fa011c3dba7c2ac96221 100644
 | 
| --- a/src/isolate.h
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| +++ b/src/isolate.h
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| @@ -498,7 +498,7 @@ class Isolate {
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|    // allocated. It is only necessary to call this method in rare cases, for
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|    // example if you are using V8 from within the body of a static initializer.
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|    // Safe to call multiple times.
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| -  static Isolate* EnsureDefaultIsolate();
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| +  static Isolate* EnsureDefaultIsolate(bool must_be_null = false);
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|  
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|    // Initialize all thread local variables
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|    static void InitializeThreadLocalStorage();
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| 
 |