Remove LocalFrameLifecycleObserver::willDetachFrameHost()

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

Index: third_party/WebKit/Source/core/frame/LocalFrameLifecycleNotifier.cpp
diff --git a/third_party/WebKit/Source/core/frame/LocalFrameLifecycleNotifier.cpp b/third_party/WebKit/Source/core/frame/LocalFrameLifecycleNotifier.cpp
deleted file mode 100644
index 1c741bc4682dae463cc596b388d49047a250b100..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/frame/LocalFrameLifecycleNotifier.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "core/frame/LocalFrameLifecycleNotifier.h"
-
-#include "core/frame/LocalFrameLifecycleObserver.h"
-
-namespace blink {
-
-void LocalFrameLifecycleNotifier::notifyWillDetachFrameHost()
-{
-    TemporaryChange<IterationState> scope(m_iterationState, AllowingNone);
-    for (LocalFrameLifecycleObserver* observer : m_observers)
-        observer->willDetachFrameHost();
-}
-
-} // namespace blink