Index: third_party/WebKit/Source/core/dom/IntersectionObserverEntry.idl |
diff --git a/third_party/WebKit/Source/core/dom/IntersectionObserverEntry.idl b/third_party/WebKit/Source/core/dom/IntersectionObserverEntry.idl |
index ac032863c43b683a0b3e7dc48980b1d43b9bec87..14d72684ba79d79c661f29ddacd0983db5399268 100644 |
--- a/third_party/WebKit/Source/core/dom/IntersectionObserverEntry.idl |
+++ b/third_party/WebKit/Source/core/dom/IntersectionObserverEntry.idl |
@@ -10,7 +10,7 @@ |
] interface IntersectionObserverEntry { |
readonly attribute ClientRect boundingClientRect; |
readonly attribute ClientRect intersectionRect; |
- readonly attribute ClientRect rootBounds; |
+ readonly attribute ClientRect? rootBounds; |
readonly attribute Element target; |
readonly attribute DOMHighResTimeStamp time; |
}; |