Index: third_party/WebKit/Source/core/dom/Document.cpp |
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp |
index 5c2f62a24179903ffa8ce0a4d910f031ce208341..4cb1782b811c4f031203d808af6e10d870167a2a 100644 |
--- a/third_party/WebKit/Source/core/dom/Document.cpp |
+++ b/third_party/WebKit/Source/core/dom/Document.cpp |
@@ -2219,6 +2219,8 @@ void Document::detach(const AttachContext& context) |
if (m_frame->loader().client()->sharedWorkerRepositoryClient()) |
m_frame->loader().client()->sharedWorkerRepositoryClient()->documentDetached(this); |
+ for (DocumentVisibilityObserver* observer : m_visibilityObservers) |
+ observer->willDetachDocument(); |
stopActiveDOMObjects(); |
// FIXME: consider using ActiveDOMObject. |