Always provide --dart-sdk-summary in build mode tests.

Change-Id: Ief03ccfbc8b59c9fdf20e089ebe7c4ccd7db8d22
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/149244
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>

https://dart.googlesource.com/sdk/+/c703e05689125b0c17aba826cfc7e127e3adfa88
diff --git a/commits.json b/commits.json
index ee1128c..e53e471 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"af14d2adf0e0933703cdf885ff2361a8f3eef00c",
   "external/github.com/flutter/flutter":"8443f7cfd348143da645ba0af937cda8f802c99d",
-  "sdk":"2e261f9386187cd2726ee3dd79ffd19b25d5a987"
+  "sdk":"c703e05689125b0c17aba826cfc7e127e3adfa88"
 }
\ No newline at end of file