[dartdev] add a --format option to dart analyze

Change-Id: Iad7d14b12892ce2121430f0cd94a2b0cd0d8e978
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/174384
Commit-Queue: Devon Carew <devoncarew@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>

https://dart.googlesource.com/sdk/+/81986f4a36fa8fca77521f6dbc9b38d99129c494
diff --git a/commits.json b/commits.json
index d802d50..54d04a8 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"3101dff34a0b981be935d3781f954cbb10c5b3f1",
   "external/github.com/flutter/flutter":"a7f5fd5360007518644597c60a1f2169eacccc2b",
-  "sdk":"01bb5bcfe02fb0d5820ccf076da6e298927998f4"
+  "sdk":"81986f4a36fa8fca77521f6dbc9b38d99129c494"
 }
\ No newline at end of file