Bug 1496114 - PaymentRequest CTOR is controlled by pref, r=marcosc

dom/payments/PaymentRequest.cpp

@@ -60,12 +60,11 @@ NS_IMPL_RELEASE_INHERITED(PaymentRequest, DOMEventTargetHelper)
 bool
 PaymentRequest::PrefEnabled(JSContext* aCx, JSObject* aObj)
 {
-#ifdef NIGHTLY_BUILD
-  return XRE_IsContentProcess() &&
-         Preferences::GetBool("dom.payments.request.enabled");
-#else
-  return false;
-#endif
+  if (!XRE_IsContentProcess()) {
+    return false;
+  }
+
+  return StaticPrefs::dom_payments_request_enabled();
 }
 
 nsresult

modules/libpref/init/StaticPrefList.h

@@ -208,6 +208,19 @@ VARCACHE_PREF(
 // Note, this is not currently safe to use for normal browsing yet.
 PREF("dom.serviceWorkers.parent_intercept", bool, false)
 
+// Enable PaymentRequest API
+#ifdef NIGHTLY_BUILD
+# define PREF_VALUE  true
+#else
+# define PREF_VALUE  false
+#endif
+VARCACHE_PREF(
+  "dom.payments.request.enabled",
+   dom_payments_request_enabled,
+  bool, PREF_VALUE
+)
+#undef PREF_VALUE
+
 // Whether a user gesture is required to call PaymentRequest.prototype.show().
 VARCACHE_PREF(
   "dom.payments.request.user_interaction_required",