print service url when connecting to web applications (#38823)

https://dart.googlesource.com/external/github.com/flutter/flutter/+/7ed27b51a39c5f6092fa62389224eea3b02034ca
diff --git a/commits.json b/commits.json
index 24f0838..7378e56 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"df178fd936c019e0743444f9bb4eece89564c2d4",
-  "external/github.com/flutter/flutter":"4d81b0c9708f57e545e96f0e6817f5eab3fc68ee",
+  "external/github.com/flutter/flutter":"7ed27b51a39c5f6092fa62389224eea3b02034ca",
   "sdk":"56b3dede78f91d372a1f573848dd7dcaec84d62f"
 }
\ No newline at end of file