--- a/dom/ipc/ContentChild.cpp
+++ b/dom/ipc/ContentChild.cpp
@@ -892,17 +892,17 @@ ContentChild::ProvideWindowCommon(TabChi
         cv->GetFullZoom(&fullZoom);
       }
     }
 
     nsresult rv;
     if (!SendCreateWindow(aTabOpener, newChild, renderFrame,
                           aChromeFlags, aCalledFromJS, aPositionSpecified,
                           aSizeSpecified,
-                          name, features,
+                          features,
                           baseURIString,
                           openerDocShell
                             ? openerDocShell->GetOriginAttributes()
                             : DocShellOriginAttributes(),
                           fullZoom,
                           &rv,
                           aWindowIsNew,
                           &frameScripts,

--- a/dom/ipc/ContentParent.cpp
+++ b/dom/ipc/ContentParent.cpp
@@ -5381,17 +5381,16 @@ ContentParent::DeallocPWebBrowserPersist
 bool
 ContentParent::RecvCreateWindow(PBrowserParent* aThisTab,
                                 PBrowserParent* aNewTab,
                                 PRenderFrameParent* aRenderFrame,
                                 const uint32_t& aChromeFlags,
                                 const bool& aCalledFromJS,
                                 const bool& aPositionSpecified,
                                 const bool& aSizeSpecified,
-                                const nsString& aName,
                                 const nsCString& aFeatures,
                                 const nsCString& aBaseURI,
                                 const DocShellOriginAttributes& aOpenerOriginAttributes,
                                 const float& aFullZoom,
                                 nsresult* aResult,
                                 bool* aWindowIsNew,
                                 InfallibleTArray<FrameScriptInfo>* aFrameScripts,
                                 nsCString* aURLToLoad,
@@ -5516,17 +5515,16 @@ ContentParent::RecvCreateWindow(PBrowser
     }
 
     return true;
   }
 
   nsCOMPtr<mozIDOMWindowProxy> window;
   TabParent::AutoUseNewTab aunt(newTab, aWindowIsNew, aURLToLoad);
 
-  const char* name = aName.IsVoid() ? nullptr : NS_ConvertUTF16toUTF8(aName).get();
   const char* features = aFeatures.IsVoid() ? nullptr : aFeatures.get();
 
   *aResult = pwwatch->OpenWindow2(parent, nullptr, name, features, aCalledFromJS,
                                   false, false, thisTabParent, nullptr,
                                   aFullZoom, 1, getter_AddRefs(window));
 
   if (NS_WARN_IF(!window)) {
     return true;

--- a/dom/ipc/ContentParent.h
+++ b/dom/ipc/ContentParent.h
@@ -502,17 +502,16 @@ public:
 
   virtual bool RecvCreateWindow(PBrowserParent* aThisTabParent,
                                 PBrowserParent* aOpener,
                                 layout::PRenderFrameParent* aRenderFrame,
                                 const uint32_t& aChromeFlags,
                                 const bool& aCalledFromJS,
                                 const bool& aPositionSpecified,
                                 const bool& aSizeSpecified,
-                                const nsString& aName,
                                 const nsCString& aFeatures,
                                 const nsCString& aBaseURI,
                                 const DocShellOriginAttributes& aOpenerOriginAttributes,
                                 const float& aFullZoom,
                                 nsresult* aResult,
                                 bool* aWindowIsNew,
                                 InfallibleTArray<FrameScriptInfo>* aFrameScripts,
                                 nsCString* aURLToLoad,

--- a/dom/ipc/PContent.ipdl
+++ b/dom/ipc/PContent.ipdl
@@ -1146,17 +1146,16 @@ parent:
 
     sync CreateWindow(nullable PBrowser aThisTab,
                       PBrowser aNewTab,
                       PRenderFrame aRenderFrame,
                       uint32_t aChromeFlags,
                       bool aCalledFromJS,
                       bool aPositionSpecified,
                       bool aSizeSpecified,
-                      nsString aName,
                       nsCString aFeatures,
                       nsCString aBaseURI,
                       DocShellOriginAttributes aOpenerOriginAttributes,
                       float aFullZoom)
       returns (nsresult rv,
                bool windowOpened,
                FrameScriptInfo[] frameScripts,
                nsCString urlToLoad,