Roll Flutter Engine from 2c38fc5cb03f to 3a58a7d0105e (1 revision) (#112342)

https://dart.googlesource.com/external/github.com/flutter/flutter/+/64f84f6a47d276e4d79cb10c203adbddeeeae336
diff --git a/commits.json b/commits.json
index 582feef..64f9e70 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"3a58a7d0105e48c324940bf7c67c7da2a4fb5716",
-  "external/github.com/flutter/flutter":"810172f844bbe311e02f1e27899a61c408773f4e",
+  "external/github.com/flutter/flutter":"64f84f6a47d276e4d79cb10c203adbddeeeae336",
   "sdk":"cfddeee68e0cf7451a2eee1a9fbbff8a8d9c0b92"
 }
\ No newline at end of file