Disambiguate LifecycleObserver::contextDestroyed

third_party/WebKit/Source/platform/LifecycleContextTest.cpp

Index: third_party/WebKit/Source/platform/LifecycleContextTest.cpp
diff --git a/third_party/WebKit/Source/platform/LifecycleContextTest.cpp b/third_party/WebKit/Source/platform/LifecycleContextTest.cpp
index 4d3fca75d924d9c730aad3b45d992cbb048e978c..0aee4ae705edcbf849fc6394821189928d5f4a91 100644
--- a/third_party/WebKit/Source/platform/LifecycleContextTest.cpp
+++ b/third_party/WebKit/Source/platform/LifecycleContextTest.cpp
@@ -56,10 +56,9 @@ class TestingObserver final
     return new TestingObserver(context);
   }
 
-  void contextDestroyed() override {
-    LifecycleObserver::contextDestroyed();
+  void contextDestroyed(DummyContext* destroyedContext) override {
     if (m_observerToRemoveOnDestruct) {
-      lifecycleContext()->removeObserver(m_observerToRemoveOnDestruct);
+      destroyedContext->removeObserver(m_observerToRemoveOnDestruct);
       m_observerToRemoveOnDestruct.clear();
     }
     m_contextDestroyedCalled = true;