cc9b174 Fix race condition introduced by background platform channels (flutter/engine#29377)

engine-flutter-autoroll · engine-flutter-autoroll · commit 68cdf591469f · 2021-11-07T01:35:54.000Z
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
@@ -1 +1 @@
-145d89057b09fab84b657acbda0dcc6109567233
+cc9b174c2e61527ae4ef3ca259bd17853b732749
