| Index: Source/core/html/HTMLIFrameElement.idl
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| diff --git a/Source/core/html/HTMLIFrameElement.idl b/Source/core/html/HTMLIFrameElement.idl
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| index d8a8a8eb70076db77f0fe5720450b414efc60842..1fc081e5328347e0f286fcfbf39ca3c1a3e30dc0 100644
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| --- a/Source/core/html/HTMLIFrameElement.idl
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| +++ b/Source/core/html/HTMLIFrameElement.idl
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| @@ -27,7 +27,6 @@ interface HTMLIFrameElement : HTMLElement {
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|      [Reflect, TreatNullAs=NullString] attribute DOMString marginWidth;
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|      [Reflect] attribute DOMString name;
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|      [Reflect, TreatNullAs=NullString] attribute DOMString sandbox;
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| -    [Reflect, RuntimeEnabled=SeamlessIFrames] attribute boolean seamless;
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|      [Reflect] attribute DOMString scrolling;
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|      [Reflect, URL, PerWorldBindings, ActivityLogging=SetterForIsolatedWorlds] attribute DOMString src;
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|      [Reflect] attribute DOMString srcdoc;
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| 
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