Bug 1871745 - Hide -moz-user-focus from content. r=smaug

-moz-user-focus: none didn't do anything useful for non-XUL until
bug 1868552. It seems nonetheless some sites specify it, which can cause
compat issues.

Let's hide this property from content, to avoid breaking those sites.

Differential Revision: https://phabricator.services.mozilla.com/D197253

dom/animation/test/mozilla/test_moz_prefixed_properties.html

@@ -44,9 +44,6 @@ const testcases = [
   {
     property: "-moz-text-size-adjust"
   },
-  {
-    property: "-moz-user-focus"
-  },
   {
     property: "-moz-user-input"
   },

layout/style/test/ListCSSProperties.cpp

@@ -103,6 +103,7 @@ const char* gInaccessibleProperties[] = {
     "-moz-min-font-size-ratio",           // parsed by UA sheets only
     "-moz-box-collapse",                  // chrome-only internal properties
     "-moz-subtree-hidden-only-visually",  // chrome-only internal properties
+    "-moz-user-focus",                    // chrome-only internal properties
     "-moz-window-input-region-margin",    // chrome-only internal properties
     "-moz-window-opacity",                // chrome-only internal properties
     "-moz-window-transform",              // chrome-only internal properties

layout/style/test/property_database.js

@@ -3905,14 +3905,6 @@ var gCSSProperties = {
     other_values: ["preserve-3d"],
     invalid_values: [],
   },
-  "-moz-user-focus": {
-    domProp: "MozUserFocus",
-    inherited: true,
-    type: CSS_TYPE_LONGHAND,
-    initial_values: ["normal"],
-    other_values: ["none", "ignore"],
-    invalid_values: [],
-  },
   "-moz-user-input": {
     domProp: "MozUserInput",
     inherited: true,

layout/style/test/test_non_content_accessible_properties.html

@@ -23,6 +23,7 @@ const NON_CONTENT_ACCESSIBLE_PROPERTIES = [
   "-moz-inert",
   "-moz-control-character-visibility",
   "-moz-context-properties",
+  "-moz-user-focus",
 ];
 
 function testInWin(win) {

servo/components/style/properties/longhands/inherited_ui.mako.rs

@@ -74,6 +74,7 @@ ${helpers.single_keyword(
     gecko_enum_prefix="StyleUserFocus",
     animation_value_type="discrete",
     spec="Nonstandard (https://developer.mozilla.org/en-US/docs/Web/CSS/-moz-user-focus)",
+    enabled_in="chrome",
     affects="",
 )}