Remove LocalFrameLifecycleObserver::willDetachFrameHost()

third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp

Index: third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
diff --git a/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp b/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
index a0980bf95495e200242827965456f8678fe99b32..02125f96ef65e68d08df6dc53fd4e37b622a99e0 100644
--- a/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
+++ b/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
@@ -104,11 +104,6 @@ public:
     }
 
     // LocalFrameLifecycleObserver overrides:
-    void willDetachFrameHost() override
-    {
-        m_window->willDetachFrameHost();
-    }
-
     void contextDestroyed() override
     {
         m_window->frameDestroyed();
@@ -495,11 +490,6 @@ MediaQueryList* LocalDOMWindow::matchMedia(const String& media)
     return document() ? document()->mediaQueryMatcher().matchMedia(media) : nullptr;
 }
 
-void LocalDOMWindow::willDetachFrameHost()
-{
-    frame()->host()->eventHandlerRegistry().didRemoveAllEventHandlers(*this);
-}
-
 void LocalDOMWindow::frameDestroyed()
 {
     willDestroyDocumentInFrame();