Use the name of errors, not the diagnostic messages. (#117229)

* Use the name of errors, not the diagnostic messages.

* Trailing comma.
https://dart.googlesource.com/external/github.com/flutter/flutter/+/ebeb4918957a5116df1ff18144d9a89d5fba9d4f

DEPS

diff --git a/DEPS b/DEPS
index 546dfa0..26b1689 100644
--- a/DEPS
+++ b/DEPS
@@ -243,7 +243,7 @@
 
   'engine/src/third_party/dart': Var('dart_git') + '/sdk' + '@' + '0c4c372d5e511cfb39754880f5d27c26f63a6b44',
 
-  'flutter': Var('flutter_git') + '/mirrors/flutter' + '@' + '98e9032ca364033247386871f60d6f8da320099c',
+  'flutter': Var('flutter_git') + '/mirrors/flutter' + '@' + 'ebeb4918957a5116df1ff18144d9a89d5fba9d4f',
 
    # Fuchsia compatibility
    #

commits.json

diff --git a/commits.json b/commits.json
index a573570..6b0f3ee 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "engine/src/flutter":"4097c333f841c824a64a2d806ef442bdc02a534a",
   "engine/src/third_party/dart":"0c4c372d5e511cfb39754880f5d27c26f63a6b44",
-  "flutter":"98e9032ca364033247386871f60d6f8da320099c"
+  "flutter":"ebeb4918957a5116df1ff18144d9a89d5fba9d4f"
 }
\ No newline at end of file