From ae902d5599a99771ea4f2dfa8ed7313beadc2b6f Mon Sep 17 00:00:00 2001
From: bechen <bechen@mozilla.com>
Date: Mon, 11 Jul 2016 15:03:53 +0800
Subject: [PATCH] Bug 871747 - Load the TrackElement outside the document.
 r=rillian

MozReview-Commit-ID: Cql1YAZnnnL

--HG--
extra : transplant_source : %FA%21%D1%8A%14%E6%BA%8A%91H%F0%EE%CB%7B%AB9%19%20%2A%C2
---
 dom/html/HTMLTrackElement.cpp | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/dom/html/HTMLTrackElement.cpp b/dom/html/HTMLTrackElement.cpp
index 1ad91700ab97..aa201f4cccd7 100644
--- a/dom/html/HTMLTrackElement.cpp
+++ b/dom/html/HTMLTrackElement.cpp
@@ -239,10 +239,6 @@ HTMLTrackElement::BindToTree(nsIDocument* aDocument,
                                                  aCompileEventHandlers);
   NS_ENSURE_SUCCESS(rv, rv);
 
-  if (!aDocument) {
-    return NS_OK;
-  }
-
   LOG(LogLevel::Debug, ("Track Element bound to tree."));
   if (!aParent || !aParent->IsNodeOfType(nsINode::eMEDIA)) {
     return NS_OK;
@@ -263,7 +259,7 @@ HTMLTrackElement::BindToTree(nsIDocument* aDocument,
       CreateTextTrack();
     }
     RefPtr<Runnable> r = NewRunnableMethod(this, &HTMLTrackElement::LoadResource);
-    mMediaParent->RunInStableState(r);
+    nsContentUtils::RunInStableState(r.forget());
   }
 
   return NS_OK;