Bug 1690898 - Add a mozinfo entry for nnt, and update WPT test expectations. r=jgraham

Other platforms are going to need more annotations, so this allows us to
update one line while rolling out the feature, rather than updating a
bunch of test expectations. Also should be clearer.

Let me know if there are better ways to do this.

Differential Revision: https://phabricator.services.mozilla.com/D104102

modules/libpref/init/StaticPrefList.yaml

@@ -10496,6 +10496,9 @@
 #---------------------------------------------------------------------------
 
 # Global user preference for disabling native theme in content processes.
+#
+# NOTE(emilio): When changing this make sure to update the non_native_theme
+# entry in python/mozbuild/mozbuild/mozinfo.py
 - name: widget.disable-native-theme-for-content
   type: RelaxedAtomicBool
 #if defined(XP_LINUX) && defined(NIGHTLY_BUILD) && !defined(ANDROID)

python/mozbuild/mozbuild/mozinfo.py

@@ -96,6 +96,7 @@ def build_dict(config, env=os.environ):
     d["artifact"] = substs.get("MOZ_ARTIFACT_BUILDS") == "1"
     d["ccov"] = substs.get("MOZ_CODE_COVERAGE") == "1"
     d["cc_type"] = substs.get("CC_TYPE")
+    d["non_native_theme"] = d["os"] == "linux" and d["nightly_build"]
 
     def guess_platform():
         if d["buildapp"] == "browser":

testing/web-platform/meta/dom/events/Event-dispatch-redispatch.html.ini

@@ -1,9 +1,5 @@
 [Event-dispatch-redispatch.html]
   [Redispatching mouseup event whose default action dispatches a click event]
     expected:
-      if os == "mac": PASS
-      if os == "android": PASS
-      if (os == "linux") and release_or_beta: FAIL
-      if os == "linux": PASS
-      FAIL
-
+      if (os == "linux") and not non_native_theme: FAIL
+      if os == "windows": FAIL

testing/web-platform/meta/html/rendering/widgets/baseline-alignment-and-overflow.tentative.html.ini

@@ -1,24 +1,24 @@
 [baseline-alignment-and-overflow.tentative.html]
   [<input type="file" style="overflow: visible; appearance: auto;">]
     expected:
-      if (os == "linux") and release_or_beta: FAIL
+      if (os == "linux") and not non_native_theme: FAIL
 
   [<input type="file" style="overflow: scroll; appearance: auto;">]
     expected:
-      if (os == "linux") and release_or_beta: FAIL
+      if (os == "linux") and not non_native_theme: FAIL
 
   [<input type="file" style="overflow: visible; appearance: none;">]
     expected:
-      if (os == "linux") and release_or_beta: FAIL
+      if (os == "linux") and not non_native_theme: FAIL
 
   [<input type="file" style="overflow: hidden; appearance: none;">]
     expected:
-      if (os == "linux") and release_or_beta: FAIL
+      if (os == "linux") and not non_native_theme: FAIL
 
   [<input type="file" style="overflow: scroll; appearance: none;">]
     expected:
-      if (os == "linux") and release_or_beta: FAIL
+      if (os == "linux") and not non_native_theme: FAIL
 
   [<input type="file" style="overflow: hidden; appearance: auto;">]
     expected:
-      if (os == "linux") and release_or_beta: FAIL
+      if (os == "linux") and not non_native_theme: FAIL