Bug 1507895 - Part V, Remove dom.ua_widget.enabled pref r=smaug

With all the dependency removed this pref can be safely removed.

Depends on D17574

Differential Revision: https://phabricator.services.mozilla.com/D17575

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

browser/base/content/test/plugins/browser.ini

@@ -1,5 +1,4 @@
 [DEFAULT]
-prefs = dom.ua_widget.enabled=true
 support-files =
   blocklist_proxy.js
   blockNoPlugins.xml

devtools/client/inspector/markup/test/browser.ini

@@ -1,7 +1,6 @@
 [DEFAULT]
 tags = devtools
 subsuite = devtools
-prefs = dom.ua_widget.enabled=false
 support-files =
   doc_markup_anonymous.html
   doc_markup_anonymous_xul.xul

devtools/client/inspector/markup/test/browser_markup_shadowdom_ua_widgets.js

@@ -76,7 +76,6 @@ add_task(async function() {
 });
 
 async function setup({ showUserAgentShadowRoots }) {
-  await pushPref("dom.ua_widget.enabled", true);
   await pushPref("devtools.inspector.showUserAgentShadowRoots", showUserAgentShadowRoots);
 
   const { inspector } = await openInspectorForURL(TEST_URL);

devtools/client/inspector/markup/test/browser_markup_shadowdom_ua_widgets_with_nac.js

@@ -68,7 +68,6 @@ add_task(async function testElementPicker() {
 });
 
 async function setup({ showAllAnonymousContent }) {
-  await pushPref("dom.ua_widget.enabled", true);
   await pushPref("devtools.inspector.showUserAgentShadowRoots", true);
   await pushPref("devtools.inspector.showAllAnonymousContent", showAllAnonymousContent);
 

devtools/server/tests/browser/browser_inspector-shadow.js

@@ -141,7 +141,6 @@ add_task(async function() {
 add_task(async function() {
   info("Test UA widgets when showUserAgentShadowRoots is true");
   await SpecialPowers.pushPrefEnv({"set": [
-    ["dom.ua_widget.enabled", true],
     ["devtools.inspector.showUserAgentShadowRoots", true],
   ]});
 
@@ -161,7 +160,6 @@ add_task(async function() {
 add_task(async function() {
   info("Test UA widgets when showUserAgentShadowRoots is false");
   await SpecialPowers.pushPrefEnv({"set": [
-    ["dom.ua_widget.enabled", true],
     ["devtools.inspector.showUserAgentShadowRoots", false],
   ]});
 

dom/base/nsContentUtils.cpp

@@ -310,7 +310,6 @@ bool nsContentUtils::sIsPerformanceTimingEnabled = false;
 bool nsContentUtils::sIsResourceTimingEnabled = false;
 bool nsContentUtils::sIsPerformanceNavigationTimingEnabled = false;
 bool nsContentUtils::sIsFormAutofillAutocompleteEnabled = false;
-bool nsContentUtils::sIsUAWidgetEnabled = false;
 bool nsContentUtils::sSendPerformanceTimingNotifications = false;
 bool nsContentUtils::sUseActivityCursor = false;
 bool nsContentUtils::sAnimationsAPICoreEnabled = false;
@@ -658,9 +657,6 @@ nsresult nsContentUtils::Init() {
   Preferences::AddBoolVarCache(&sIsFormAutofillAutocompleteEnabled,
                                "dom.forms.autocomplete.formautofill", false);
 
-  Preferences::AddBoolVarCache(&sIsUAWidgetEnabled, "dom.ua_widget.enabled",
-                               false);
-
   Preferences::AddIntVarCache(&sPrivacyMaxInnerWidth,
                               "privacy.window.maxInnerWidth", 1000);
 

dom/base/nsContentUtils.h

@@ -3152,17 +3152,6 @@ class nsContentUtils {
       JSContext* aCx, const mozilla::dom::Sequence<JSObject*>& aTransfer,
       JS::MutableHandle<JS::Value> aValue);
 
-  /**
-   * Returns whether or not UA Widget is enabled, controlled by pref
-   * dom.ua_widget.enabled.
-   *
-   * When enabled, UA Widget will replace legacy XBL when rendering
-   * JS-implemented web content widgets (videocontrols/datetimebox/etc.)
-   *
-   * It is really enabled only if Shadow DOM is also enabled.
-   */
-  static bool IsUAWidgetEnabled() { return sIsUAWidgetEnabled; }
-
   /**
    * Returns true if reserved key events should be prevented from being sent
    * to their target. Instead, the key event should be handled by chrome only.
@@ -3446,7 +3435,6 @@ class nsContentUtils {
   static bool sIsUpgradableDisplayContentPrefEnabled;
   static bool sIsFrameTimingPrefEnabled;
   static bool sIsFormAutofillAutocompleteEnabled;
-  static bool sIsUAWidgetEnabled;
   static bool sSendPerformanceTimingNotifications;
   static bool sUseActivityCursor;
   static bool sAnimationsAPICoreEnabled;

modules/libpref/init/all.js

@@ -1459,8 +1459,6 @@ pref("dom.event.clipboardevents.enabled",   true);
 pref("dom.event.highrestimestamp.enabled",  true);
 pref("dom.event.coalesce_mouse_move",       true);
 
-pref("dom.ua_widget.enabled", true);
-
 pref("javascript.enabled",                  true);
 pref("javascript.options.strict",           false);
 #ifdef DEBUG

toolkit/content/tests/widgets/chrome.ini

@@ -1,6 +1,4 @@
 [DEFAULT]
-prefs =
-  dom.ua_widget.enabled=true
 skip-if = os == 'android'
 support-files =
   tree_shared.js

toolkit/content/tests/widgets/mochitest.ini

@@ -1,6 +1,4 @@
 [DEFAULT]
-prefs =
-  dom.ua_widget.enabled=true
 support-files =
   audio.wav
   audio.ogg