Revert r189385 "Remove LifecycleContext" and r189391, r189530, r189456 that block it

Source/core/page/PageLifecycleNotifier.cpp

 /*
  * Copyright (C) 2013 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 
 #include "config.h"
 #include "core/page/PageLifecycleNotifier.h"
 
-#include "core/page/PageLifecycleObserver.h"
-
 namespace blink {
 
 PageLifecycleNotifier::PageLifecycleNotifier(Page* context)
     : LifecycleNotifier<Page>(context)
 {
 }
 
 void PageLifecycleNotifier::addObserver(PageLifecycleNotifier::Observer* observer)
 {
     if (observer->observerType() == Observer::PageLifecycleObserverType) {
         RELEASE_ASSERT(m_iterating != IteratingOverPageObservers);
         m_pageObservers.add(static_cast<PageLifecycleObserver*>(observer));
     }
 
     LifecycleNotifier<Page>::addObserver(observer);
 }
 
 void PageLifecycleNotifier::removeObserver(PageLifecycleNotifier::Observer* observer)
 {
     if (observer->observerType() == Observer::PageLifecycleObserverType) {
         RELEASE_ASSERT(m_iterating != IteratingOverPageObservers);
         m_pageObservers.remove(static_cast<PageLifecycleObserver*>(observer));
     }
 
     LifecycleNotifier<Page>::removeObserver(observer);
 }
 
-void PageLifecycleNotifier::notifyPageVisibilityChanged()
-{
-    TemporaryChange<IterationType> scope(m_iterating, IteratingOverPageObservers);
-    for (PageLifecycleObserver* pageObserver : m_pageObservers)
-        pageObserver->pageVisibilityChanged();
-}
-
-void PageLifecycleNotifier::notifyDidCommitLoad(LocalFrame* frame)
-{
-    TemporaryChange<IterationType> scope(m_iterating, IteratingOverPageObservers);
-    for (PageLifecycleObserver* pageObserver : m_pageObservers)
-        pageObserver->didCommitLoad(frame);
-}
-
 } // namespace blink