| Index: third_party/WebKit/Source/core/html/HTMLImageElement.idl
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| diff --git a/third_party/WebKit/Source/core/html/HTMLImageElement.idl b/third_party/WebKit/Source/core/html/HTMLImageElement.idl
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| index 44abb3f5a4e4036a84db01b43e178aef7a3abb74..732668c1e05624a3274cb4c3c4fe16cb69728295 100644
 | 
| --- a/third_party/WebKit/Source/core/html/HTMLImageElement.idl
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| +++ b/third_party/WebKit/Source/core/html/HTMLImageElement.idl
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| @@ -55,4 +55,6 @@
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|      // https://dev.w3.org/csswg/cssom-view/#extensions-to-the-htmlimageelement-interface
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|      [MeasureAs=HTMLImageElementX] readonly attribute long x;
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|      [MeasureAs=HTMLImageElementY] readonly attribute long y;
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| +
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| +    [RuntimeEnabled=JSImageDecode, CallWith=ScriptState, RaisesException] Promise decode();
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|  };
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| 
 |