diff --git a/netwerk/protocol/http/HttpChannelParent.cpp b/netwerk/protocol/http/HttpChannelParent.cpp
index b1ed09f08fb..82a349e0e42 100644
--- a/netwerk/protocol/http/HttpChannelParent.cpp
+++ b/netwerk/protocol/http/HttpChannelParent.cpp
@@ -1064,25 +1064,6 @@ mozilla::ipc::IPCResult HttpChannelParent::RecvRemoveCorsPreflightCacheEntry(
   return IPC_OK();
 }
 
-mozilla::ipc::IPCResult HttpChannelParent::RecvSetCookies(
-    const nsACString& aBaseDomain, const OriginAttributes& aOriginAttributes,
-    nsIURI* aHost, const bool& aIsThirdParty,
-    nsTArray<CookieStruct>&& aCookies) {
-  net::PCookieServiceParent* csParent =
-      LoneManagedOrNullAsserts(Manager()->ManagedPCookieServiceParent());
-  NS_ENSURE_TRUE(csParent, IPC_OK());
-
-  auto* cs = static_cast<net::CookieServiceParent*>(csParent);
-
-  BrowsingContext* browsingContext = nullptr;
-  if (mBrowserParent) {
-    browsingContext = mBrowserParent->GetBrowsingContext();
-  }
-
-  return cs->SetCookies(nsCString(aBaseDomain), aOriginAttributes, aHost,
-                        aIsThirdParty, aCookies, browsingContext);
-}
-
 //-----------------------------------------------------------------------------
 // HttpChannelParent::nsIRequestObserver
 //-----------------------------------------------------------------------------
diff --git a/netwerk/protocol/http/HttpChannelParent.h b/netwerk/protocol/http/HttpChannelParent.h
index 55aa41979c6..0870b5d29b1 100644
--- a/netwerk/protocol/http/HttpChannelParent.h
+++ b/netwerk/protocol/http/HttpChannelParent.h
@@ -195,10 +195,6 @@ class HttpChannelParent final : public nsIInterfaceRequestor,
   virtual mozilla::ipc::IPCResult RecvRemoveCorsPreflightCacheEntry(
       nsIURI* uri, const mozilla::ipc::PrincipalInfo& requestingPrincipal,
       const OriginAttributes& originAttributes) override;
-  virtual mozilla::ipc::IPCResult RecvSetCookies(
-      const nsACString& aBaseDomain, const OriginAttributes& aOriginAttributes,
-      nsIURI* aHost, const bool& aIsThirdParty,
-      nsTArray<CookieStruct>&& aCookies) override;
   virtual mozilla::ipc::IPCResult RecvBytesRead(const int32_t& aCount) override;
   virtual mozilla::ipc::IPCResult RecvOpenOriginalCacheInputStream() override;
   virtual void ActorDestroy(ActorDestroyReason why) override;
diff --git a/netwerk/protocol/http/PHttpChannel.ipdl b/netwerk/protocol/http/PHttpChannel.ipdl
index 35e928f14a1..e1965ef892d 100644
--- a/netwerk/protocol/http/PHttpChannel.ipdl
+++ b/netwerk/protocol/http/PHttpChannel.ipdl
@@ -59,15 +59,6 @@ parent:
                                       PrincipalInfo requestingPrincipal,
                                       OriginAttributes originAttributes);
 
-  // Send cookies to the parent for a given channel. Compared to PCookieService
-  // SetCookies this method allows the parent to determine which BrowsingContext
-  // the request was sent for.
-  async SetCookies(nsCString baseDomain,
-                                    OriginAttributes attrs,
-                                    nullable nsIURI host,
-                                    bool isThirdParty,
-                                    CookieStruct[] cookies);
-
   // After receiving this message, the parent calls SendDeleteSelf, and makes
   // sure not to send any more messages after that.
   async DeletingChannel();