diff --git a/dom/xhr/XMLHttpRequestMainThread.cpp b/dom/xhr/XMLHttpRequestMainThread.cpp
index 313464c00cbd..b437d9f65d5d 100644
--- a/dom/xhr/XMLHttpRequestMainThread.cpp
+++ b/dom/xhr/XMLHttpRequestMainThread.cpp
@@ -319,6 +319,14 @@ XMLHttpRequestMainThread::InitParameters(bool aAnon, bool aSystem)
   SetParameters(aAnon, aSystem);
 }
 
+void
+XMLHttpRequestMainThread::SetClientInfoAndController(const ClientInfo& aClientInfo,
+                                                     const Maybe<ServiceWorkerDescriptor>& aController)
+{
+  mClientInfo.emplace(aClientInfo);
+  mController = aController;
+}
+
 void
 XMLHttpRequestMainThread::ResetResponse()
 {
@@ -2503,6 +2511,17 @@ XMLHttpRequestMainThread::CreateChannel()
                        loadGroup,
                        nullptr,   // aCallbacks
                        loadFlags);
+  } else if (mClientInfo.isSome()) {
+    rv = NS_NewChannel(getter_AddRefs(mChannel),
+                       mRequestURL,
+                       mPrincipal,
+                       mClientInfo.ref(),
+                       mController,
+                       secFlags,
+                       nsIContentPolicy::TYPE_INTERNAL_XMLHTTPREQUEST,
+                       loadGroup,
+                       nullptr,   // aCallbacks
+                       loadFlags);
   } else {
     // Otherwise use the principal.
     rv = NS_NewChannel(getter_AddRefs(mChannel),
diff --git a/dom/xhr/XMLHttpRequestMainThread.h b/dom/xhr/XMLHttpRequestMainThread.h
index 12ec5626e316..ade4291c2241 100644
--- a/dom/xhr/XMLHttpRequestMainThread.h
+++ b/dom/xhr/XMLHttpRequestMainThread.h
@@ -32,13 +32,16 @@
 #include "mozilla/Assertions.h"
 #include "mozilla/Attributes.h"
 #include "mozilla/DOMEventTargetHelper.h"
+#include "mozilla/Maybe.h"
 #include "mozilla/MemoryReporting.h"
 #include "mozilla/NotNull.h"
 #include "mozilla/dom/MutableBlobStorage.h"
 #include "mozilla/dom/BodyExtractor.h"
+#include "mozilla/dom/ClientInfo.h"
 #include "mozilla/dom/TypedArray.h"
 #include "mozilla/dom/File.h"
 #include "mozilla/dom/FormData.h"
+#include "mozilla/dom/ServiceWorkerDescriptor.h"
 #include "mozilla/dom/URLSearchParams.h"
 #include "mozilla/dom/XMLHttpRequest.h"
 #include "mozilla/dom/XMLHttpRequestBinding.h"
@@ -221,6 +224,9 @@ public:
     mIsSystem = aSystem;
   }
 
+  void SetClientInfoAndController(const ClientInfo& aClientInfo,
+                                  const Maybe<ServiceWorkerDescriptor>& aController);
+
   NS_DECL_ISUPPORTS_INHERITED
 
   // nsIXMLHttpRequest
@@ -690,6 +696,9 @@ protected:
   nsCOMPtr<nsIURI> mBaseURI;
   nsCOMPtr<nsILoadGroup> mLoadGroup;
 
+  Maybe<ClientInfo> mClientInfo;
+  Maybe<ServiceWorkerDescriptor> mController;
+
   State mState;
 
   StyleBackendType mStyleBackend;
diff --git a/dom/xhr/XMLHttpRequestWorker.cpp b/dom/xhr/XMLHttpRequestWorker.cpp
index 13e494e65db0..6ce37c4cac9b 100644
--- a/dom/xhr/XMLHttpRequestWorker.cpp
+++ b/dom/xhr/XMLHttpRequestWorker.cpp
@@ -97,6 +97,8 @@ public:
   // Read on multiple threads.
   WorkerPrivate* mWorkerPrivate;
   XMLHttpRequestWorker* mXMLHttpRequestPrivate;
+  const ClientInfo mClientInfo;
+  const Maybe<ServiceWorkerDescriptor> mController;
 
   // XHR Params:
   bool mMozAnon;
@@ -132,8 +134,11 @@ public:
   bool mArrayBufferResponseWasTransferred;
 
 public:
-  Proxy(XMLHttpRequestWorker* aXHRPrivate, bool aMozAnon, bool aMozSystem)
+  Proxy(XMLHttpRequestWorker* aXHRPrivate, const ClientInfo& aClientInfo,
+        const Maybe<ServiceWorkerDescriptor>& aController, bool aMozAnon,
+        bool aMozSystem)
   : mWorkerPrivate(nullptr), mXMLHttpRequestPrivate(aXHRPrivate),
+    mClientInfo(aClientInfo), mController(aController),
     mMozAnon(aMozAnon), mMozSystem(aMozSystem),
     mInnerEventStreamId(0), mInnerChannelId(0), mOutstandingSendCount(0),
     mOuterEventStreamId(0), mOuterChannelId(0), mOpenCount(0), mLastLoaded(0),
@@ -871,6 +876,7 @@ Proxy::Init()
                   mWorkerPrivate->GetLoadGroup());
 
   mXHR->SetParameters(mMozAnon, mMozSystem);
+  mXHR->SetClientInfoAndController(mClientInfo, mController);
 
   ErrorResult rv;
   mXHRUpload = mXHR->GetUpload(rv);
@@ -1882,7 +1888,8 @@ XMLHttpRequestWorker::Open(const nsACString& aMethod,
     }
   }
   else {
-    mProxy = new Proxy(this, mMozAnon, mMozSystem);
+    mProxy = new Proxy(this, mWorkerPrivate->GetClientInfo(),
+                       mWorkerPrivate->GetController(), mMozAnon, mMozSystem);
   }
 
   mProxy->mOuterEventStreamId++;