Remove WeakPtrs from DocumentTiming/DocumentLoadTiming

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index b372b48cc4a8f948711bccd04133aaa8db6e6f16..26b33075eb8218667929384816530a6a3338dc64 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -421,7 +421,7 @@ Document::Document(const DocumentInit& initializer, DocumentClassFlags documentC
     , m_loadEventDelayCount(0)
     , m_loadEventDelayTimer(this, &Document::loadEventDelayTimerFired)
     , m_pluginLoadingTimer(this, &Document::pluginLoadingTimerFired)
-    , m_documentTiming(this->weakReference())
+    , m_documentTiming(*this)
     , m_writeRecursionIsTooDeep(false)
     , m_writeRecursionDepth(0)
     , m_taskRunner(MainThreadTaskRunner::create(this))
@@ -4394,18 +4394,13 @@ WeakPtrWillBeRawPtr<Document> Document::contextDocument()
     if (m_contextDocument)
         return m_contextDocument;
     if (m_frame) {
-        return weakReference();
-    }
-    return WeakPtrWillBeRawPtr<Document>(nullptr);
-}
-
-WeakPtrWillBeRawPtr<Document> Document::weakReference()
-{
 #if ENABLE(OILPAN)
-    return this;
+        return this;
 #else
-    return m_weakFactory.createWeakPtr();
+        return m_weakFactory.createWeakPtr();
 #endif
+    }
+    return nullptr;
 }
 
 PassRefPtrWillBeRawPtr<Attr> Document::createAttribute(const AtomicString& name, ExceptionState& exceptionState)