| Index: third_party/WebKit/Source/core/html/HTMLFrameSetElement.cpp | 
| diff --git a/third_party/WebKit/Source/core/html/HTMLFrameSetElement.cpp b/third_party/WebKit/Source/core/html/HTMLFrameSetElement.cpp | 
| index 629aee64c45d29ffbaac275279676d33a9908000..1250c5e61b78b1de35d0a9cc75413917f6025bf0 100644 | 
| --- a/third_party/WebKit/Source/core/html/HTMLFrameSetElement.cpp | 
| +++ b/third_party/WebKit/Source/core/html/HTMLFrameSetElement.cpp | 
| @@ -274,6 +274,7 @@ void HTMLFrameSetElement::willRecalcStyle(StyleRecalcChange) { | 
| layoutObject()->setNeedsLayoutAndFullPaintInvalidation( | 
| LayoutInvalidationReason::StyleChange); | 
| clearNeedsStyleRecalc(); | 
| +    clearNeedsReattachLayoutTree(); | 
| } | 
| } | 
|  | 
|  |