Use Document, rather than document element, for implicit root.

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

Index: third_party/WebKit/Source/core/dom/ElementIntersectionObserverData.cpp
diff --git a/third_party/WebKit/Source/core/dom/ElementIntersectionObserverData.cpp b/third_party/WebKit/Source/core/dom/ElementIntersectionObserverData.cpp
deleted file mode 100644
index f4c306cd936a25885d49ec75fa94cabfe21476ef..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/core/dom/ElementIntersectionObserverData.cpp
+++ /dev/null
@@ -1,95 +0,0 @@
-// Copyright 2016 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/dom/ElementIntersectionObserverData.h"
-
-#include "core/dom/Document.h"
-#include "core/dom/Element.h"
-#include "core/dom/IntersectionObservation.h"
-#include "core/dom/IntersectionObserver.h"
-#include "core/dom/IntersectionObserverController.h"
-
-namespace blink {
-
-ElementIntersectionObserverData::ElementIntersectionObserverData() { }
-
-ElementIntersectionObserverData::~ElementIntersectionObserverData() { }
-
-bool ElementIntersectionObserverData::hasIntersectionObserver() const
-{
-    return !m_intersectionObservers.isEmpty();
-}
-
-bool ElementIntersectionObserverData::hasIntersectionObservation() const
-{
-    return !m_intersectionObservations.isEmpty();
-}
-
-IntersectionObservation* ElementIntersectionObserverData::getObservationFor(IntersectionObserver& observer)
-{
-    auto i = m_intersectionObservations.find(&observer);
-    if (i == m_intersectionObservations.end())
-        return nullptr;
-    return i->value;
-}
-
-void ElementIntersectionObserverData::addObservation(IntersectionObservation& observation)
-{
-    m_intersectionObservations.add(&observation.observer(), &observation);
-}
-
-void ElementIntersectionObserverData::removeObservation(IntersectionObserver& observer)
-{
-    m_intersectionObservations.remove(&observer);
-}
-
-void ElementIntersectionObserverData::activateValidIntersectionObservers(Element& element)
-{
-    IntersectionObserverController& controller = element.document().ensureIntersectionObserverController();
-    for (auto& observer : m_intersectionObservers) {
-        controller.addTrackedObserver(*observer);
-        observer->setActive(true);
-    }
-    for (auto& observation : m_intersectionObservations)
-        observation.value->setActive(observation.key->isDescendantOfRoot(&element));
-}
-
-void ElementIntersectionObserverData::deactivateAllIntersectionObservers(Element& element)
-{
-    element.document().ensureIntersectionObserverController().removeTrackedObserversForRoot(element);
-    for (auto& observer : m_intersectionObservers)
-        observer->setActive(false);
-    for (auto& observation : m_intersectionObservations)
-        observation.value->setActive(false);
-}
-
-#if !ENABLE(OILPAN)
-void ElementIntersectionObserverData::dispose()
-{
-    HeapVector<Member<IntersectionObserver>> observersToDisconnect;
-    copyToVector(m_intersectionObservers, observersToDisconnect);
-    for (auto& observer : observersToDisconnect)
-        observer->disconnect();
-    ASSERT(m_intersectionObservers.isEmpty());
-}
-#endif
-
-WeakPtrWillBeRawPtr<Element> ElementIntersectionObserverData::createWeakPtr(Element* element)
-{
-#if ENABLE(OILPAN)
-    return element;
-#else
-    if (!m_weakPointerFactory)
-        m_weakPointerFactory = adoptPtrWillBeNoop(new WeakPtrFactory<Element>(element));
-    return m_weakPointerFactory->createWeakPtr();
-#endif
-}
-
-DEFINE_TRACE(ElementIntersectionObserverData)
-{
-    visitor->trace(m_intersectionObservers);
-    visitor->trace(m_intersectionObservations);
-}
-
-} // namespace blink