Roll Flutter from 58ec4839159e to fc444aedab12 (32 revisions) (#2582)

diff --git a/.ci/flutter_master.version b/.ci/flutter_master.version
index 105ee1a..9fb3349 100644
--- a/.ci/flutter_master.version
+++ b/.ci/flutter_master.version
@@ -1 +1 @@
-58ec4839159ea24eafe200d9c1ff41e35f720fa0
+fc444aedab1290b510ca85fc4a906e185cd3eaa6