--- a/js/xpconnect/public/xpc_make_class.h
+++ b/js/xpconnect/public/xpc_make_class.h
@@ -20,18 +20,18 @@ bool
 XPC_WN_CannotModifyPropertyStub(JSContext* cx, JS::HandleObject obj,
                                 JS::HandleId id, JS::HandleValue v);
 
 bool
 XPC_WN_MaybeResolvingDeletePropertyStub(JSContext* cx, JS::HandleObject obj,
                                         JS::HandleId id,
                                         JS::ObjectOpResult& result);
 bool
-XPC_WN_CantDeletePropertyStub(JSContext* cx, JS::HandleObject obj,
-                              JS::HandleId id, JS::ObjectOpResult& result);
+XPC_WN_CannotDeletePropertyStub(JSContext* cx, JS::HandleObject obj,
+                                JS::HandleId id, JS::ObjectOpResult& result);
 
 bool
 XPC_WN_Helper_GetProperty(JSContext* cx, JS::HandleObject obj, JS::HandleId id,
                           JS::MutableHandleValue vp);
 
 bool
 XPC_WN_Helper_SetProperty(JSContext* cx, JS::HandleObject obj, JS::HandleId id,
                           JS::MutableHandleValue vp,
@@ -84,17 +84,17 @@ extern const js::ObjectOps XPC_WN_Object
       ? XPC_WN_MaybeResolvingPropertyStub \
       : XPC_WN_CannotModifyPropertyStub, \
     \
     /* delProperty */ \
     ((_flags) & nsIXPCScriptable::USE_JSSTUB_FOR_DELPROPERTY) \
     ? nullptr \
     : ((_flags) & nsIXPCScriptable::ALLOW_PROP_MODS_DURING_RESOLVE) \
       ? XPC_WN_MaybeResolvingDeletePropertyStub \
-      : XPC_WN_CantDeletePropertyStub, \
+      : XPC_WN_CannotDeletePropertyStub, \
     \
     /* getProperty */ \
     ((_flags) & nsIXPCScriptable::WANT_GETPROPERTY) \
     ? XPC_WN_Helper_GetProperty \
     : nullptr, \
     \
     /* setProperty */ \
     ((_flags) & nsIXPCScriptable::WANT_SETPROPERTY) \

--- a/js/xpconnect/src/XPCWrappedNativeJSOps.cpp
+++ b/js/xpconnect/src/XPCWrappedNativeJSOps.cpp
@@ -474,18 +474,18 @@ XPC_WN_OnlyIWrite_AddPropertyStub(JSCont
 bool
 XPC_WN_CannotModifyPropertyStub(JSContext* cx, HandleObject obj, HandleId id,
                                 HandleValue v)
 {
     return Throw(NS_ERROR_XPC_CANT_MODIFY_PROP_ON_WN, cx);
 }
 
 bool
-XPC_WN_CantDeletePropertyStub(JSContext* cx, HandleObject obj, HandleId id,
-                              ObjectOpResult& result)
+XPC_WN_CannotDeletePropertyStub(JSContext* cx, HandleObject obj, HandleId id,
+                                ObjectOpResult& result)
 {
     return Throw(NS_ERROR_XPC_CANT_MODIFY_PROP_ON_WN, cx);
 }
 
 bool
 XPC_WN_CannotModifySetPropertyStub(JSContext* cx, HandleObject obj, HandleId id,
                                    MutableHandleValue vp, ObjectOpResult& result)
 {
@@ -619,17 +619,17 @@ XPC_WN_NoHelper_Resolve(JSContext* cx, H
                                  JSPROP_ENUMERATE |
                                  JSPROP_READONLY |
                                  JSPROP_PERMANENT,
                                  resolvedp);
 }
 
 static const js::ClassOps XPC_WN_NoHelper_JSClassOps = {
     XPC_WN_OnlyIWrite_AddPropertyStub, // addProperty
-    XPC_WN_CantDeletePropertyStub,     // delProperty
+    XPC_WN_CannotDeletePropertyStub,   // delProperty
     nullptr,                           // getProperty
     nullptr,                           // setProperty
     XPC_WN_Shared_Enumerate,           // enumerate
     XPC_WN_NoHelper_Resolve,           // resolve
     nullptr,                           // mayResolve
     XPC_WN_NoHelper_Finalize,          // finalize
     nullptr,                           // call
     nullptr,                           // construct
@@ -1201,17 +1201,17 @@ XPC_WN_NoMods_Proto_Resolve(JSContext* c
                                  true, nullptr, nullptr, si,
                                  JSPROP_READONLY |
                                  JSPROP_PERMANENT |
                                  JSPROP_ENUMERATE, resolvedp);
 }
 
 static const js::ClassOps XPC_WN_NoMods_Proto_JSClassOps = {
     XPC_WN_OnlyIWrite_Proto_AddPropertyStub,   // addProperty
-    XPC_WN_CantDeletePropertyStub,             // delProperty
+    XPC_WN_CannotDeletePropertyStub,           // delProperty
     nullptr,                                   // getProperty
     nullptr,                                   // setProperty
     XPC_WN_Shared_Proto_Enumerate,             // enumerate
     XPC_WN_NoMods_Proto_Resolve,               // resolve
     nullptr,                                   // mayResolve
     XPC_WN_Shared_Proto_Finalize,              // finalize
     nullptr,                                   // call
     nullptr,                                   // construct
@@ -1297,17 +1297,17 @@ XPC_WN_TearOff_ObjectMoved(JSObject* obj
 // XPC_WN_TEAROFF_RESERVED_SLOTS value is OK.
 
 static_assert(((XPC_WRAPPER_FLAGS >> JSCLASS_RESERVED_SLOTS_SHIFT) &
                JSCLASS_RESERVED_SLOTS_MASK) == 0,
               "XPC_WRAPPER_FLAGS should not include any reserved slots");
 
 static const js::ClassOps XPC_WN_Tearoff_JSClassOps = {
     XPC_WN_OnlyIWrite_AddPropertyStub,  // addProperty
-    XPC_WN_CantDeletePropertyStub,      // delProperty
+    XPC_WN_CannotDeletePropertyStub,    // delProperty
     nullptr,                            // getProperty
     nullptr,                            // setProperty
     XPC_WN_TearOff_Enumerate,           // enumerate
     XPC_WN_TearOff_Resolve,             // resolve
     nullptr,                            // mayResolve
     XPC_WN_TearOff_Finalize,            // finalize
     nullptr,                            // call
     nullptr,                            // construct