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Diffstat (limited to 'chromium/third_party/blink/renderer/core/page/page_visibility_observer.cc')
-rw-r--r--chromium/third_party/blink/renderer/core/page/page_visibility_observer.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/chromium/third_party/blink/renderer/core/page/page_visibility_observer.cc b/chromium/third_party/blink/renderer/core/page/page_visibility_observer.cc
index 2cab0c51ea9..9ad5f413d2d 100644
--- a/chromium/third_party/blink/renderer/core/page/page_visibility_observer.cc
+++ b/chromium/third_party/blink/renderer/core/page/page_visibility_observer.cc
@@ -29,7 +29,7 @@ void PageVisibilityObserver::SetPage(Page* page) {
page_->PageVisibilityObserverList().AddObserver(this);
}
-void PageVisibilityObserver::Trace(Visitor* visitor) {
+void PageVisibilityObserver::Trace(Visitor* visitor) const {
visitor->Trace(page_);
}