Disambiguate LifecycleObserver::contextDestroyed

third_party/WebKit/Source/core/dom/DocumentTest.cpp

Index: third_party/WebKit/Source/core/dom/DocumentTest.cpp
diff --git a/third_party/WebKit/Source/core/dom/DocumentTest.cpp b/third_party/WebKit/Source/core/dom/DocumentTest.cpp
index 55e92fd77c051fd6b1b3caa101f09c738f62812b..13a714aefa3fab90d5f50d28f3931cdc8269ba81 100644
--- a/third_party/WebKit/Source/core/dom/DocumentTest.cpp
+++ b/third_party/WebKit/Source/core/dom/DocumentTest.cpp
@@ -144,7 +144,7 @@ class TestSynchronousMutationObserver
 
  private:
   // Implement |SynchronousMutationObserver| member functions.
-  void contextDestroyed() final;
+  void contextDestroyed(Document*) final;
   void didChangeChildren(const ContainerNode&) final;
   void didMergeTextNodes(Text&, unsigned) final;
   void didSplitTextNode(const Text&) final;
@@ -171,7 +171,7 @@ TestSynchronousMutationObserver::TestSynchronousMutationObserver(
   setContext(&document);
 }
 
-void TestSynchronousMutationObserver::contextDestroyed() {
+void TestSynchronousMutationObserver::contextDestroyed(Document*) {
   ++m_contextDestroyedCalledCounter;
 }