diff --git a/dom/commandhandler/nsICommandParams.idl b/dom/commandhandler/nsICommandParams.idl
index 5b577a297a04..6e481c5cf8a9 100644
--- a/dom/commandhandler/nsICommandParams.idl
+++ b/dom/commandhandler/nsICommandParams.idl
@@ -91,9 +91,3 @@ interface nsICommandParams : nsISupports
 %}
 };
 
-// {f7fa4581-238e-11d5-a73c-ab64fb68f2bc}
-%{C++
-#define NS_COMMAND_PARAMS_CID { 0xf7fa4581, 0x238e, 0x11d5, { 0xa7, 0x3c, 0xab, 0x64, 0xfb, 0x68, 0xf2, 0xbc } }
-#define NS_COMMAND_PARAMS_CONTRACTID "@mozilla.org/embedcomp/command-params;1"
-%}
-
diff --git a/js/xpconnect/idl/xpccomponents.idl b/js/xpconnect/idl/xpccomponents.idl
index d141acdc6e50..dec5284da224 100644
--- a/js/xpconnect/idl/xpccomponents.idl
+++ b/js/xpconnect/idl/xpccomponents.idl
@@ -11,6 +11,7 @@
 
 interface xpcIJSWeakReference;
 interface nsIClassInfo;
+interface nsICommandParams;
 interface nsIComponentManager;
 interface nsICycleCollectorListener;
 interface nsIEditorSpellCheck;
@@ -723,6 +724,9 @@ interface nsIXPCComponents_Utils : nsISupports
 
     /* Create a commandline object. */
     nsISupports createCommandLine();
+
+    /* Create a command params object. */
+    nsICommandParams createCommandParams();
 };
 
 /**
diff --git a/js/xpconnect/src/XPCComponents.cpp b/js/xpconnect/src/XPCComponents.cpp
index 64ffb4e4898c..6c1994dc563b 100644
--- a/js/xpconnect/src/XPCComponents.cpp
+++ b/js/xpconnect/src/XPCComponents.cpp
@@ -43,6 +43,7 @@
 #include "GeckoProfiler.h"
 #include "mozilla/EditorSpellCheck.h"
 #include "nsCommandLine.h"
+#include "nsCommandParams.h"
 
 using namespace mozilla;
 using namespace JS;
@@ -3231,6 +3232,15 @@ nsXPCComponents_Utils::CreateCommandLine(nsISupports** aCommandLine)
     return NS_OK;
 }
 
+NS_IMETHODIMP
+nsXPCComponents_Utils::CreateCommandParams(nsICommandParams** aCommandParams)
+{
+    NS_ENSURE_ARG_POINTER(aCommandParams);
+    nsCOMPtr<nsICommandParams> commandParams = new nsCommandParams();
+    commandParams.forget(aCommandParams);
+    return NS_OK;
+}
+
 /***************************************************************************/
 /***************************************************************************/
 /***************************************************************************/
diff --git a/toolkit/actors/ControllersChild.jsm b/toolkit/actors/ControllersChild.jsm
index 880139f45dc4..75965515bc65 100644
--- a/toolkit/actors/ControllersChild.jsm
+++ b/toolkit/actors/ControllersChild.jsm
@@ -19,8 +19,7 @@ class ControllersChild extends ActorChild {
       case "ControllerCommands:DoWithParams":
         var data = message.data;
         if (this.docShell.isCommandEnabled(data.cmd)) {
-          var params = Cc["@mozilla.org/embedcomp/command-params;1"].
-                       createInstance(Ci.nsICommandParams);
+          var params = Cu.createCommandParams();
           for (var name in data.params) {
             var value = data.params[name];
             if (value.type == "long") {
diff --git a/toolkit/xre/nsEmbeddingModule.cpp b/toolkit/xre/nsEmbeddingModule.cpp
index b6f2cb958696..1d07daaa836e 100644
--- a/toolkit/xre/nsEmbeddingModule.cpp
+++ b/toolkit/xre/nsEmbeddingModule.cpp
@@ -10,7 +10,6 @@
 #include "nsFind.h"
 #include "nsWebBrowserFind.h"
 #include "nsWebBrowserPersist.h"
-#include "nsCommandParams.h"
 #include "nsCommandGroup.h"
 #include "nsNetCID.h"
 #include "nsEmbedCID.h"
@@ -26,7 +25,6 @@ NS_GENERIC_FACTORY_CONSTRUCTOR(nsAppStartupNotifier)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsFind)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsWebBrowserFind)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsWebBrowserPersist)
-NS_GENERIC_FACTORY_CONSTRUCTOR(nsCommandParams)
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsControllerCommandGroup)
 
 #ifdef MOZ_XUL
@@ -52,7 +50,6 @@ NS_DEFINE_NAMED_CID(NS_FIND_CID);
 NS_DEFINE_NAMED_CID(NS_WEB_BROWSER_FIND_CID);
 NS_DEFINE_NAMED_CID(NS_APPSTARTUPNOTIFIER_CID);
 NS_DEFINE_NAMED_CID(NS_WEBBROWSERPERSIST_CID);
-NS_DEFINE_NAMED_CID(NS_COMMAND_PARAMS_CID);
 NS_DEFINE_NAMED_CID(NS_CONTROLLER_COMMAND_GROUP_CID);
 
 static const mozilla::Module::CIDEntry kEmbeddingCIDs[] = {
@@ -75,7 +72,6 @@ static const mozilla::Module::CIDEntry kEmbeddingCIDs[] = {
     { &kNS_WEB_BROWSER_FIND_CID, false, nullptr, nsWebBrowserFindConstructor },
     { &kNS_APPSTARTUPNOTIFIER_CID, false, nullptr, nsAppStartupNotifierConstructor },
     { &kNS_WEBBROWSERPERSIST_CID, false, nullptr, nsWebBrowserPersistConstructor },
-    { &kNS_COMMAND_PARAMS_CID, false, nullptr, nsCommandParamsConstructor },
     { &kNS_CONTROLLER_COMMAND_GROUP_CID, false, nullptr, nsControllerCommandGroupConstructor },
     { nullptr }
 };
@@ -92,7 +88,6 @@ static const mozilla::Module::ContractIDEntry kEmbeddingContracts[] = {
     { NS_WEB_BROWSER_FIND_CONTRACTID, &kNS_WEB_BROWSER_FIND_CID },
     { NS_APPSTARTUPNOTIFIER_CONTRACTID, &kNS_APPSTARTUPNOTIFIER_CID },
     { NS_WEBBROWSERPERSIST_CONTRACTID, &kNS_WEBBROWSERPERSIST_CID },
-    { NS_COMMAND_PARAMS_CONTRACTID, &kNS_COMMAND_PARAMS_CID },
     { NS_CONTROLLER_COMMAND_GROUP_CONTRACTID, &kNS_CONTROLLER_COMMAND_GROUP_CID },
     { nullptr }
 };