Replace RenderFullScreen with top layer

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 9edf98daaca23c90e4a0e54bc8660f76ed377b71..d681737be137a1d5de5c73a0cbac281cc2a4ba5c 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -450,6 +450,7 @@ Document::Document(const DocumentInit& initializer, DocumentClassFlags documentC
     , m_weakFactory(this)
     , m_contextDocument(initializer.contextDocument())
     , m_hasFullscreenElementStack(false)
+    , m_activeModalDialog(0)
     , m_loadEventDelayCount(0)
     , m_loadEventDelayTimer(this, &Document::loadEventDelayTimerFired)
     , m_referrerPolicy(ReferrerPolicyDefault)
@@ -4777,11 +4778,40 @@ void Document::removeFromTopLayer(Element* element)
     element->setIsInTopLayer(false);
 }
 
+void Document::addToModalDialogStack(HTMLDialogElement* dialog)
+{
+    if (dialog->isModal())
+        return;
+    addToTopLayer(dialog);
+    dialog->setModal(true);
+    m_activeModalDialog = dialog;
+}
+
+void Document::removeFromModalDialogStack(HTMLDialogElement* dialog)
+{
+    if (!dialog->isModal())
+        return;
+    removeFromTopLayer(dialog);
+    dialog->setModal(false);
+
+    if (m_activeModalDialog != dialog)
+        return;
+    m_activeModalDialog = 0;

[esprehn, 2014/01/21 18:59:05]

Document::activeModalDialog() should just contain a loop, get rid of the field
and the updating below.

[falken, 2014/01/22 06:08:02]

Done.

+    Vector<RefPtr<Element> >::reverse_iterator end = m_topLayerElements.rend();
+    for (Vector<RefPtr<Element> >::reverse_iterator it = m_topLayerElements.rbegin(); it != end; ++it) {
+        if (!it->get()->hasTagName(dialogTag))
+            continue;
+        HTMLDialogElement* dialog = toHTMLDialogElement(it->get());
+        if (dialog->isModal()) {
+            m_activeModalDialog = dialog;
+            return;
+        }
+    }
+}
+
 HTMLDialogElement* Document::activeModalDialog() const
 {
-    if (m_topLayerElements.isEmpty())
-        return 0;
-    return toHTMLDialogElement(m_topLayerElements.last().get());
+    return m_activeModalDialog;

[esprehn, 2014/01/21 18:59:05]

This should contain the loop.

 }
 
 void Document::webkitExitPointerLock()