Oilpan: add transition types to track interface objects.

Source/core/html/track/InbandTextTrack.cpp

Index: Source/core/html/track/InbandTextTrack.cpp
diff --git a/Source/core/html/track/InbandTextTrack.cpp b/Source/core/html/track/InbandTextTrack.cpp
index 1d5cbe37213f0f0a9376ec1d22de0e71bab7f858..f128799a7197802d76c4241cf1d99b8479601997 100644
--- a/Source/core/html/track/InbandTextTrack.cpp
+++ b/Source/core/html/track/InbandTextTrack.cpp
@@ -27,6 +27,7 @@
 #include "core/html/track/InbandTextTrack.h"
 
 #include "bindings/v8/ExceptionStatePlaceholder.h"
+#include "core/html/HTMLMediaElement.h"
 #include "core/html/track/vtt/VTTCue.h"
 #include "platform/Logging.h"
 #include "public/platform/WebInbandTextTrack.h"
@@ -38,9 +39,9 @@ using blink::WebString;
 
 namespace WebCore {
 
-PassRefPtr<InbandTextTrack> InbandTextTrack::create(Document& document, WebInbandTextTrack* webTrack)
+PassRefPtrWillBeRawPtr<InbandTextTrack> InbandTextTrack::create(Document& document, WebInbandTextTrack* webTrack)
 {
-    return adoptRef(new InbandTextTrack(document, webTrack));
+    return adoptRefWillBeRefCountedGarbageCollected(new InbandTextTrack(document, webTrack));
 }
 
 InbandTextTrack::InbandTextTrack(Document& document, WebInbandTextTrack* webTrack)
@@ -97,7 +98,10 @@ void InbandTextTrack::setTrackList(TextTrackList* trackList)
 
 void InbandTextTrack::addWebVTTCue(double start, double end, const WebString& id, const WebString& content, const WebString& settings)
 {
-    RefPtr<VTTCue> cue = VTTCue::create(document(), start, end, content);
+    HTMLMediaElement* owner = mediaElement();
+    if (!owner)

[haraken, 2014/04/22 02:37:47]

Can this happen? In non-oilpan builds, it doesn't happen that addWebVTTCue is
called after the document is gone. Thus it shouldn't happen in oilpan builds
either.

Shall we add ASSERT(owner)?

[sof, 2014/04/22 06:27:52]

Right, let's keep the behavior the exact-same.

+        return;
+    RefPtrWillBeRawPtr<VTTCue> cue = VTTCue::create(owner->document(), start, end, content);
     cue->setId(id);
     cue->parseSettings(settings);
     addCue(cue);