diff --git a/content/base/src/nsDOMDataChannel.cpp b/content/base/src/nsDOMDataChannel.cpp
index 43735d06155e..7f043fd99d7a 100644
--- a/content/base/src/nsDOMDataChannel.cpp
+++ b/content/base/src/nsDOMDataChannel.cpp
@@ -142,8 +142,6 @@ nsDOMDataChannel::Init(nsPIDOMWindow* aDOMWindow)
   nsresult rv;
   nsAutoString urlParam;
 
-  nsDOMEventTargetHelper::Init();
-
   MOZ_ASSERT(mDataChannel);
   mDataChannel->SetListener(this, nullptr);
 
diff --git a/content/base/src/nsDOMFileReader.cpp b/content/base/src/nsDOMFileReader.cpp
index 165dd86bac31..6492dc6c36db 100644
--- a/content/base/src/nsDOMFileReader.cpp
+++ b/content/base/src/nsDOMFileReader.cpp
@@ -118,20 +118,25 @@ nsDOMFileReader::~nsDOMFileReader()
   nsLayoutStatics::Release();
 }
 
+
+/**
+ * This Init method is called from the factory constructor.
+ */
 nsresult
 nsDOMFileReader::Init()
 {
-  nsDOMEventTargetHelper::Init();
-
-  nsIScriptSecurityManager *secMan = nsContentUtils::GetSecurityManager();
-  nsCOMPtr<nsIPrincipal> subjectPrincipal;
+  nsIScriptSecurityManager* secMan = nsContentUtils::GetSecurityManager();
+  nsCOMPtr<nsIPrincipal> principal;
   if (secMan) {
-    nsresult rv = secMan->GetSubjectPrincipal(getter_AddRefs(subjectPrincipal));
-    NS_ENSURE_SUCCESS(rv, rv);
+    secMan->GetSystemPrincipal(getter_AddRefs(principal));
   }
-  NS_ENSURE_STATE(subjectPrincipal);
-  mPrincipal.swap(subjectPrincipal);
+  NS_ENSURE_STATE(principal);
+  mPrincipal.swap(principal);
 
+  // Instead of grabbing some random global from the context stack,
+  // let's use the default one (junk drawer) for now.
+  // We should move away from this Init...
+  BindToOwner(xpc::GetNativeForGlobal(xpc::GetJunkScope()));
   return NS_OK;
 }
 
diff --git a/content/events/src/nsDOMEventTargetHelper.cpp b/content/events/src/nsDOMEventTargetHelper.cpp
index cd6c34e6cc06..c4739ed6c58c 100644
--- a/content/events/src/nsDOMEventTargetHelper.cpp
+++ b/content/events/src/nsDOMEventTargetHelper.cpp
@@ -363,27 +363,3 @@ nsDOMEventTargetHelper::GetContextForEventHandlers(nsresult* aRv)
                : nullptr;
 }
 
-void
-nsDOMEventTargetHelper::Init(JSContext* aCx)
-{
-  JSContext* cx = aCx;
-  if (!cx) {
-    nsIJSContextStack* stack = nsContentUtils::ThreadJSContextStack();
-
-    if (!stack)
-      return;
-
-    if (NS_FAILED(stack->Peek(&cx)) || !cx)
-      return;
-  }
-
-  NS_ASSERTION(cx, "Should have returned earlier ...");
-  nsIScriptContext* context = GetScriptContextFromJSContext(cx);
-  if (context) {
-    nsCOMPtr<nsPIDOMWindow> window =
-      do_QueryInterface(context->GetGlobalObject());
-    if (window) {
-      BindToOwner(window->GetCurrentInnerWindow());
-    }
-  }
-}
diff --git a/content/events/src/nsDOMEventTargetHelper.h b/content/events/src/nsDOMEventTargetHelper.h
index c35e9a2fa645..f49037ce49b2 100644
--- a/content/events/src/nsDOMEventTargetHelper.h
+++ b/content/events/src/nsDOMEventTargetHelper.h
@@ -68,8 +68,6 @@ public:
     return static_cast<nsDOMEventTargetHelper*>(target);
   }
 
-  void Init(JSContext* aCx = nullptr);
-
   bool HasListenersFor(nsIAtom* aTypeWithOn)
   {
     return mListenerManager && mListenerManager->HasListenersFor(aTypeWithOn);