Bug 1867854 - Hide some macOS system colors from content. r=jwatt

Mostly drive-by. Hide macOS specific colors from content, and also the native
hyperlinktext color, which isn't and shouldn't be used from CSS at all.

Differential Revision: https://phabricator.services.mozilla.com/D195296

dom/canvas/test/test_bug232227.html

@@ -52,7 +52,6 @@ function runTest(testCanvasColors) {
     [ "-moz-MenuHover", 0x33, 0x99, 0xFF ],
     [ "-moz-MenuHoverText", 0x00, 0x00, 0x00 ],
     [ "-moz-MenubarHoverText", 0x00, 0x00, 0x00 ],
-    [ "-moz-NativeHyperlinkText", 0x00, 0x66, 0xCC ],
     [ "-moz-OddTreeRow", 0xFF, 0xFF, 0xFF ],
     [ "-moz-mac-focusring", 0x60, 0x9D, 0xD7 ],
     [ "-moz-mac-DisabledToolbarText", 0x3F, 0x3F, 0x3F ],

layout/style/test/property_database.js

@@ -5248,7 +5248,7 @@ var gCSSProperties = {
       "#fed292",
       "rgba(45,300,12,2)",
       "transparent",
-      "-moz-nativehyperlinktext",
+      "LinkText",
       "rgba(255,128,0,0.5)",
       "#e0fc",
       "#10fcee72",

servo/components/style/values/specified/color.rs

@@ -302,10 +302,13 @@ pub enum SystemColor {
     MozHeaderbarinactivetext,
 
     /// Foreground color of default buttons.
+    #[parse(condition = "ParserContext::chrome_rules_enabled")]
     MozMacDefaultbuttontext,
     /// Ring color around text fields and lists.
+    #[parse(condition = "ParserContext::chrome_rules_enabled")]
     MozMacFocusring,
     /// Text color of disabled text on toolbars.
+    #[parse(condition = "ParserContext::chrome_rules_enabled")]
     MozMacDisabledtoolbartext,
     /// The background of a macOS sidebar.
     #[parse(condition = "ParserContext::chrome_rules_enabled")]
@@ -323,12 +326,12 @@ pub enum SystemColor {
     #[parse(condition = "ParserContext::chrome_rules_enabled")]
     MozAutofillBackground,
 
-    /// Hyperlink color extracted from the system, not affected by the
-    /// browser.anchor_color user pref.
+    /// Hyperlink color extracted from the system, not affected by the browser.anchor_color user
+    /// pref.
     ///
-    /// There is no OS-specified safe background color for this text, but it is
-    /// used regularly within Windows and the Gnome DE on Dialog and Window
-    /// colors.
+    /// There is no OS-specified safe background color for this text, but it is used regularly
+    /// within Windows and the Gnome DE on Dialog and Window colors.
+    #[css(skip)]
     MozNativehyperlinktext,
 
     /// As above, but visited link color.

widget/tests/test_platform_colors.xhtml

@@ -75,7 +75,6 @@ var colors = {
   "-moz-oddtreerow": ["rgb(236, 242, 254)", "rgb(240, 240, 240)", "rgb(243, 245, 250)", "rgb(243, 246, 250)", "rgb(245, 245, 245)"],
   "-moz-visitedhyperlinktext": ["rgb(85, 26, 139)"],
   "currentcolor": ["rgb(0, 0, 0)"],
-  "-moz-nativehyperlinktext": ["rgb(20, 79, 174)"],
   "-moz-comboboxtext": ["rgb(0, 0, 0)"],
   "-moz-combobox": ["rgb(255, 255, 255)"]
 };