| Index: Source/core/dom/ExecutionContext.h
 | 
| diff --git a/Source/core/dom/ExecutionContext.h b/Source/core/dom/ExecutionContext.h
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| index 05962622ceac97c259ef36163ece7d54fb2c5d85..8d0e981e7f65e7a586da10cf03cb764ee4eed616 100644
 | 
| --- a/Source/core/dom/ExecutionContext.h
 | 
| +++ b/Source/core/dom/ExecutionContext.h
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| @@ -67,6 +67,7 @@ public:
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|      virtual bool isDedicatedWorkerGlobalScope() const { return false; }
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|      virtual bool isSharedWorkerGlobalScope() const { return false; }
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|      virtual bool isServiceWorkerGlobalScope() const { return false; }
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| +    virtual bool isCompositorWorkerGlobalScope() const { return false; }
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|      virtual bool isJSExecutionForbidden() const { return false; }
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|  
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|      virtual bool isContextThread() const { return true; }
 | 
| 
 |