Bug 1570212 - Convert dom.disable_window_print to a static pref. r=mccr8

Differential Revision: https://phabricator.services.mozilla.com/D40158

--HG--
extra : moz-landing-system : lando

dom/base/nsGlobalWindowInner.cpp

@@ -3506,13 +3506,7 @@ void nsGlobalWindowInner::Stop(ErrorResult& aError) {
 
 /* static */
 bool nsGlobalWindowInner::IsWindowPrintEnabled(JSContext*, JSObject*) {
-  static bool called = false;
-  static bool printDisabled = false;
-  if (!called) {
-    called = true;
-    Preferences::AddBoolVarCache(&printDisabled, "dom.disable_window_print");
-  }
-  return !printDisabled;
+  return !StaticPrefs::dom_disable_window_print();
 }
 
 void nsGlobalWindowInner::Print(ErrorResult& aError) {

mobile/android/app/mobile.js

@@ -223,7 +223,6 @@ pref("privacy.popups.showBrowserMessage", true);
 /* disable opening windows with the dialog feature */
 pref("dom.disable_window_open_dialog_feature", true);
 pref("dom.disable_window_showModalDialog", true);
-pref("dom.disable_window_print", true);
 pref("dom.disable_window_find", true);
 
 pref("keyword.enabled", true);

modules/libpref/init/StaticPrefList.yaml

@@ -1265,6 +1265,15 @@
   value: false
   mirror: always
 
+- name: dom.disable_window_print
+  type: bool
+#ifdef ANDROID
+  value: true
+#else
+  value: false
+#endif
+  mirror: always
+
 - name: dom.element.transform-getters.enabled
   type: bool
   value: false