[roll] Update external/github.com/flutter/flutter

external/github.com/flutter/flutter bce610f..d245b4c (2 commits)
d245b4c Revert "Roll engine 162b2e98c036..6c2a0b3a6d93 (5 commits) (#23612)" (#23628)
0f34f52 Roll engine 162b2e98c036..6c2a0b3a6d93 (5 commits) (#23612)

Test: CQ

Change-Id: I2887712dfa07680620a310385a6d7ddac96577af
diff --git a/manifest/flutter b/manifest/flutter
index 63fa62f..d3ea828 100644
--- a/manifest/flutter
+++ b/manifest/flutter
@@ -4,7 +4,7 @@
     <project name="external/github.com/flutter/flutter"
              path="third_party/dart-pkg/git/flutter"
              remote="https://chromium.googlesource.com/external/github.com/flutter/flutter"
-             revision="bce610f2c9ea7a230813d31fcd2d232ed2fb21af"/>
+             revision="d245b4c3b393925ac26405bf9922e557d8b7ea97"/>
     <project name="external/github.com/flutter/engine"
              path="third_party/flutter"
              remote="https://chromium.googlesource.com/external/github.com/flutter/engine"