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From: Michael Froman <mfroman@mozilla.com>
Date: Mon, 24 Oct 2022 13:00:00 -0500
Subject: Bug 1797161 - pt1 - tweak BUILD.gn around task_queue_win usage. r?ng!

Add assurance that we will not build task_queue_win.cc to avoid
possible win32k API usage.

Differential Revision: https://phabricator.services.mozilla.com/D160115
Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/f097eb8cbd8b7686ce306a46a4db691194fd39c1
---
 api/task_queue/BUILD.gn | 5 +++++
 rtc_base/BUILD.gn       | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/api/task_queue/BUILD.gn b/api/task_queue/BUILD.gn
index afdf47dfc9..b9bc81171f 100644
--- a/api/task_queue/BUILD.gn
+++ b/api/task_queue/BUILD.gn
@@ -31,6 +31,11 @@ rtc_library("task_queue") {
   ]
 }
 
+# Mozilla - we want to ensure that rtc_include_tests is set to false
+# to guarantee that default_task_queue_factory is not used so we
+# know that remaining win32k code in task_queue_win.cc is not built.
+# See Bug 1797161 for more info.
+assert(!rtc_include_tests, "Mozilla - verify rtc_include_tests is off")
 if (rtc_include_tests) {
 rtc_library("task_queue_test") {
   visibility = [ "*" ]
diff --git a/rtc_base/BUILD.gn b/rtc_base/BUILD.gn
index deb124d3af..eb88039d33 100644
--- a/rtc_base/BUILD.gn
+++ b/rtc_base/BUILD.gn
@@ -743,10 +743,14 @@ if (is_mac || is_ios) {
 if (is_win) {
   rtc_library("rtc_task_queue_win") {
     visibility = [ "../api/task_queue:default_task_queue_factory" ]
+# See Bug 1797161 for more info.  Remove from build until win32k
+# usage is removed.
+if (!build_with_mozilla) {
     sources = [
       "task_queue_win.cc",
       "task_queue_win.h",
     ]
+}
     deps = [
       ":checks",
       ":logging",