Index: Source/core/html/HTMLCanvasElement.cpp |
diff --git a/Source/core/html/HTMLCanvasElement.cpp b/Source/core/html/HTMLCanvasElement.cpp |
index 309ea398127ecc2d536f574617f74e603e5ccf0e..e8805396aa094994d3774af6d021dc1439dbcf1d 100644 |
--- a/Source/core/html/HTMLCanvasElement.cpp |
+++ b/Source/core/html/HTMLCanvasElement.cpp |
@@ -541,6 +541,7 @@ void HTMLCanvasElement::trace(Visitor* visitor) |
{ |
visitor->trace(m_observers); |
visitor->trace(m_context); |
+ DocumentVisibilityObserver::trace(visitor); |
HTMLElement::trace(visitor); |
} |