From 43a19a73a5b424346235c2cd5799e64de09cb790 Mon Sep 17 00:00:00 2001
From: Kyle Huey <khuey@kylehuey.com>
Date: Fri, 7 Feb 2014 16:14:59 -0800
Subject: [PATCH] Bug 968542 - Prevent IPC blobs from entraining ContentParent
 objects. r=bent

---
 dom/ipc/Blob.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dom/ipc/Blob.cpp b/dom/ipc/Blob.cpp
index bfabf12ed3e8..6754f1ac7fe3 100644
--- a/dom/ipc/Blob.cpp
+++ b/dom/ipc/Blob.cpp
@@ -955,6 +955,8 @@ private:
       MOZ_ASSERT(!mSlice);
       MOZ_ASSERT(!mDone);
 
+      NS_ENSURE_TRUE_VOID(mActor->Manager());
+
       NormalBlobConstructorParams normalParams;
       normalParams.contentType() = mContentType;
       normalParams.length() = mLength;
@@ -1352,6 +1354,8 @@ Blob<ActorFlavor>::ActorDestroy(ActorDestroyReason aWhy)
   if (mBlob && mOwnsBlob) {
     mBlob->Release();
   }
+
+  mManager = nullptr;
 }
 
 template <ActorFlavorEnum ActorFlavor>