Auto merge of #18508 - mstange:add-fsbgc-system-colors, r=emilio

style: Add system colors from bug 1387594.

<!-- Please describe your changes on the following line: -->

These are the necessary servo changes for https://bugzilla.mozilla.org/show_bug.cgi?id=1387594 .

I'm also re-importing the generated Gecko bindings from my object directory:
 - servo/components/style/gecko/generated/structs_debug.rs
 - servo/components/style/gecko/generated/structs_release.rs

But the number of changes to those files surprises me.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

<!-- Either: -->
- [ ] There are tests for these changes OR
- [X] These changes do not require tests because they're tested by compiling mozilla-central once the patches from https://bugzilla.mozilla.org/show_bug.cgi?id=1387594 land - without this patch, Firefox won't compile.

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components/style/gecko/generated/atom_macro.rs

@@ -1798,6 +1798,8 @@ cfg_if! {
             pub static nsGkAtoms_only: *mut nsIAtom;
             #[link_name = "_ZN9nsGkAtoms9onmessageE"]
             pub static nsGkAtoms_onmessage: *mut nsIAtom;
+            #[link_name = "_ZN9nsGkAtoms14onmessageerrorE"]
+            pub static nsGkAtoms_onmessageerror: *mut nsIAtom;
             #[link_name = "_ZN9nsGkAtoms11onmousedownE"]
             pub static nsGkAtoms_onmousedown: *mut nsIAtom;
             #[link_name = "_ZN9nsGkAtoms12onmouseenterE"]
@@ -6961,6 +6963,8 @@ cfg_if! {
             pub static nsGkAtoms_only: *mut nsIAtom;
             #[link_name = "?onmessage@nsGkAtoms@@2PEAVnsIAtom@@EA"]
             pub static nsGkAtoms_onmessage: *mut nsIAtom;
+            #[link_name = "?onmessageerror@nsGkAtoms@@2PEAVnsIAtom@@EA"]
+            pub static nsGkAtoms_onmessageerror: *mut nsIAtom;
             #[link_name = "?onmousedown@nsGkAtoms@@2PEAVnsIAtom@@EA"]
             pub static nsGkAtoms_onmousedown: *mut nsIAtom;
             #[link_name = "?onmouseenter@nsGkAtoms@@2PEAVnsIAtom@@EA"]
@@ -12124,6 +12128,8 @@ cfg_if! {
             pub static nsGkAtoms_only: *mut nsIAtom;
             #[link_name = "\x01?onmessage@nsGkAtoms@@2PAVnsIAtom@@A"]
             pub static nsGkAtoms_onmessage: *mut nsIAtom;
+            #[link_name = "\x01?onmessageerror@nsGkAtoms@@2PAVnsIAtom@@A"]
+            pub static nsGkAtoms_onmessageerror: *mut nsIAtom;
             #[link_name = "\x01?onmousedown@nsGkAtoms@@2PAVnsIAtom@@A"]
             pub static nsGkAtoms_onmousedown: *mut nsIAtom;
             #[link_name = "\x01?onmouseenter@nsGkAtoms@@2PAVnsIAtom@@A"]
@@ -17290,6 +17296,8 @@ macro_rules! atom {
   { unsafe { $crate::string_cache::atom_macro::atom_from_static($crate::string_cache::atom_macro::nsGkAtoms_only as *mut _) } };
 ("onmessage") =>
   { unsafe { $crate::string_cache::atom_macro::atom_from_static($crate::string_cache::atom_macro::nsGkAtoms_onmessage as *mut _) } };
+("onmessageerror") =>
+  { unsafe { $crate::string_cache::atom_macro::atom_from_static($crate::string_cache::atom_macro::nsGkAtoms_onmessageerror as *mut _) } };
 ("onmousedown") =>
   { unsafe { $crate::string_cache::atom_macro::atom_from_static($crate::string_cache::atom_macro::nsGkAtoms_onmousedown as *mut _) } };
 ("onmouseenter") =>

components/style/gecko/generated/bindings.rs

@@ -2956,6 +2956,10 @@ extern "C" {
                                       snapshots:
                                           *const ServoElementSnapshotTable);
 }
+extern "C" {
+    pub fn Servo_HasPendingRestyleAncestor(element: RawGeckoElementBorrowed)
+     -> bool;
+}
 extern "C" {
     pub fn Gecko_CreateCSSErrorReporter(sheet: *mut ServoStyleSheet,
                                         loader: *mut Loader, uri: *mut nsIURI)

components/style/properties/longhand/color.mako.rs

@@ -40,6 +40,10 @@ pub mod system_colors {
                            -moz-mac-defaultbuttontext -moz-mac-focusring -moz-mac-menuselect
                            -moz-mac-menushadow -moz-mac-menutextdisable -moz-mac-menutextselect
                            -moz-mac-disabledtoolbartext -moz-mac-secondaryhighlight
+                           -moz-mac-vibrancy-light -moz-mac-vibrancy-dark -moz-mac-menupopup
+                           -moz-mac-menuitem -moz-mac-active-menuitem -moz-mac-source-list
+                           -moz-mac-source-list-selection -moz-mac-active-source-list-selection
+                           -moz-mac-tooltip
                            -moz-menuhover -moz-menuhovertext -moz-menubartext -moz-menubarhovertext
                            -moz-oddtreerow -moz-win-mediatext -moz-win-communicationstext
                            -moz-win-accentcolor -moz-win-accentcolortext