5 files changed, 20 insertions, 0 deletions
diff --git a/dom/workers/WorkerPrivate.cpp b/dom/workers/WorkerPrivate.cpp
index 5edf7dc4a5..1d9459cd07 100644
--- a/dom/workers/WorkerPrivate.cpp
+++ b/dom/workers/WorkerPrivate.cpp
@@ -1759,6 +1759,7 @@ WorkerLoadInfo::StealFrom(WorkerLoadInfo& aOther)
   mPrincipalInfo = aOther.mPrincipalInfo.forget();
 
   mDomain = aOther.mDomain;
+  mOrigin = aOther.mOrigin;
   mServiceWorkerCacheName = aOther.mServiceWorkerCacheName;
   mWindowID = aOther.mWindowID;
   mServiceWorkerID = aOther.mServiceWorkerID;
@@ -3623,6 +3624,8 @@ WorkerPrivateParent<Derived>::SetPrincipal(nsIPrincipal* aPrincipal,
   mLoadInfo.mPrincipalInfo = new PrincipalInfo();
   mLoadInfo.mOriginAttributes = nsContentUtils::GetOriginAttributes(aLoadGroup);
 
+  nsContentUtils::GetUTFOrigin(aPrincipal, mLoadInfo.mOrigin);
+
   MOZ_ALWAYS_SUCCEEDS(
     PrincipalToPrincipalInfo(aPrincipal, mLoadInfo.mPrincipalInfo));
 }
diff --git a/dom/workers/WorkerPrivate.h b/dom/workers/WorkerPrivate.h
index ee84448068..b638c1ef11 100644
--- a/dom/workers/WorkerPrivate.h
+++ b/dom/workers/WorkerPrivate.h
@@ -624,6 +624,12 @@ public:
     return mLoadInfo.mPrincipal;
   }
 
+  const nsAString&
+  Origin() const
+  {
+    return mLoadInfo.mOrigin;
+  }
+
   nsILoadGroup*
   GetLoadGroup() const
   {
diff --git a/dom/workers/WorkerScope.cpp b/dom/workers/WorkerScope.cpp
index 081f0f1065..ec42364b52 100644
--- a/dom/workers/WorkerScope.cpp
+++ b/dom/workers/WorkerScope.cpp
@@ -357,6 +357,13 @@ WorkerGlobalScope::Btoa(const nsAString& aBtoa, nsAString& aOutput, ErrorResult&
 }
 
 void
+WorkerGlobalScope::GetOrigin(nsAString& aOrigin) const
+{
+  mWorkerPrivate->AssertIsOnWorkerThread();
+  aOrigin = mWorkerPrivate->Origin();
+}
+
+void
 WorkerGlobalScope::Dump(const Optional<nsAString>& aString) const
 {
   mWorkerPrivate->AssertIsOnWorkerThread();
diff --git a/dom/workers/WorkerScope.h b/dom/workers/WorkerScope.h
index 43b6d633ca..8d06152da2 100644
--- a/dom/workers/WorkerScope.h
+++ b/dom/workers/WorkerScope.h
@@ -145,6 +145,9 @@ public:
   void
   Btoa(const nsAString& aBtoa, nsAString& aOutput, ErrorResult& aRv) const;
 
+  void
+  GetOrigin(nsAString& aOrigin) const;
+
   IMPL_EVENT_HANDLER(online)
   IMPL_EVENT_HANDLER(offline)
 
diff --git a/dom/workers/Workers.h b/dom/workers/Workers.h
index b7d75b09c8..6b0a0158d2 100644
--- a/dom/workers/Workers.h
+++ b/dom/workers/Workers.h
@@ -245,6 +245,7 @@ struct WorkerLoadInfo
 
   nsAutoPtr<mozilla::ipc::PrincipalInfo> mPrincipalInfo;
   nsCString mDomain;
+  nsString mOrigin; // Derived from mPrincipal; can be used on worker threads.
 
   nsString mServiceWorkerCacheName;