[oilpan] The Node hierarchy should have correct accept method chains

Source/core/html/shadow/MediaControlElements.cpp

Index: Source/core/html/shadow/MediaControlElements.cpp
diff --git a/Source/core/html/shadow/MediaControlElements.cpp b/Source/core/html/shadow/MediaControlElements.cpp
index a057a5b552c8c0ae7730b9c561a499c752627b6f..2a562f477b49ed4f6a8866ccdc2db624ab7be9ed 100644
--- a/Source/core/html/shadow/MediaControlElements.cpp
+++ b/Source/core/html/shadow/MediaControlElements.cpp
@@ -327,6 +327,7 @@ Result<MediaControlPanelMuteButtonElement> MediaControlPanelMuteButtonElement::c
 
 void MediaControlPanelMuteButtonElement::acceptHeapVisitor(Visitor* visitor) const
 {
+    visitor->visit(m_controls);
     MediaControlMuteButtonElement::acceptHeapVisitor(visitor);
 }
 
@@ -555,6 +556,8 @@ Result<MediaControlClosedCaptionsTrackListElement> MediaControlClosedCaptionsTra
 
 void MediaControlClosedCaptionsTrackListElement::acceptHeapVisitor(Visitor* visitor) const
 {
+    visitor->visit(m_menuItems);
+    visitor->visit(m_controls);
     MediaControlDivElement::acceptHeapVisitor(visitor);
 }
 
@@ -623,9 +626,9 @@ void MediaControlClosedCaptionsTrackListElement::updateDisplay()
 
     bool captionsVisible = mediaElement->closedCaptionsVisible();
     for (unsigned i = 0, length = m_menuItems.size(); i < length; ++i) {
-        RefPtr<Element> trackItem = m_menuItems[i];
+        Handle<Element> trackItem = m_menuItems[i];
 
-        int trackIndex = trackListIndexForElement(trackItem.get());
+        int trackIndex = trackListIndexForElement(trackItem.raw());
         if (trackIndex == HTMLMediaElement::textTracksIndexNotFound())
             continue;
 
@@ -638,7 +641,7 @@ void MediaControlClosedCaptionsTrackListElement::updateDisplay()
         }
 
         RefPtr<TextTrack> textTrack;
-        MenuItemToTrackMap::iterator iter = m_menuToTrackMap.find(trackItem.get());
+        MenuItemToTrackMap::iterator iter = m_menuToTrackMap.find(trackItem.raw());
         if (iter == m_menuToTrackMap.end())
             continue;
         textTrack = iter->value;
@@ -685,7 +688,7 @@ void MediaControlClosedCaptionsTrackListElement::rebuildTrackListMenu()
     menuItem->appendChild(doc->createTextNode(textTrackOffText()));
     menuItem->setAttribute(trackIndexAttributeName(), textTracksOffAttrValue, ASSERT_NO_EXCEPTION);
     captionsMenuList->appendChild(menuItem);
-    m_menuItems.append(menuItem);
+    m_menuItems.append(Handle<Element>(menuItem.get()));
 
     for (unsigned i = 0, length = tracksForMenu.size(); i < length; ++i) {
         RefPtr<TextTrack> textTrack = tracksForMenu[i];
@@ -700,7 +703,7 @@ void MediaControlClosedCaptionsTrackListElement::rebuildTrackListMenu()
         menuItem->appendChild(doc->createTextNode(captionsUserPreferences->displayNameForTrack(textTrack.get())));
 
         captionsMenuList->appendChild(menuItem);
-        m_menuItems.append(menuItem);
+        m_menuItems.append(Handle<Element>(menuItem.get()));
         m_menuToTrackMap.add(menuItem, textTrack);
     }
 
@@ -730,6 +733,7 @@ Result<MediaControlTimelineElement> MediaControlTimelineElement::create(Handle<D
 
 void MediaControlTimelineElement::acceptHeapVisitor(Visitor* visitor) const
 {
+    visitor->visit(m_controls);
     MediaControlInputElement::acceptHeapVisitor(visitor);
 }