EventSender<T> singletons are better off on the Oilpan heap.

third_party/WebKit/Source/core/html/HTMLSourceElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLSourceElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLSourceElement.cpp b/third_party/WebKit/Source/core/html/HTMLSourceElement.cpp
index edb3afbfe97901e1636793279d354e4ae24ae305..eb583d7504e5d41f46dcb241af0bf5a30781b495 100644
--- a/third_party/WebKit/Source/core/html/HTMLSourceElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLSourceElement.cpp
@@ -42,8 +42,8 @@ using namespace HTMLNames;
 
 static SourceEventSender& sourceErrorEventSender()
 {
-    DEFINE_STATIC_LOCAL(SourceEventSender, sharedErrorEventSender, (EventTypeNames::error));
-    return sharedErrorEventSender;
+    DEFINE_STATIC_LOCAL(OwnPtrWillBePersistent<SourceEventSender>, sharedErrorEventSender, (SourceEventSender::create(EventTypeNames::error)));
+    return *sharedErrorEventSender;
 }
 
 class HTMLSourceElement::Listener final : public MediaQueryListListener {
@@ -76,8 +76,8 @@ DEFINE_NODE_FACTORY(HTMLSourceElement)
 
 HTMLSourceElement::~HTMLSourceElement()
 {
-    sourceErrorEventSender().cancelEvent(this);
 #if !ENABLE(OILPAN)
+    sourceErrorEventSender().cancelEvent(this);
     m_listener->clearElement();
 #endif
 }