Make _detachRaw an external method of Socket to avoid dynamic calls.

Change-Id: Iba40ba3b0f0defea7efa750688386c7fe21bbae7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/261260
Commit-Queue: Kallen Tu <kallentu@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>

https://dart.googlesource.com/sdk/+/ce7c036db217b43014a05dcbdc377e3bcb7743ae
diff --git a/DEPS b/DEPS
index 5b8ccc0..f60fe44 100644
--- a/DEPS
+++ b/DEPS
@@ -114,7 +114,7 @@
 
   'engine/src/flutter': Var('flutter_git') + '/mirrors/engine' + '@' + 'cef721963336c56e88127d82db6400ff1d247b26',
 
-  'engine/src/third_party/dart': Var('dart_git') + '/sdk' + '@' + 'b8b70dececfc050ad77778f48a4e9990146d1e0f',
+  'engine/src/third_party/dart': Var('dart_git') + '/sdk' + '@' + 'ce7c036db217b43014a05dcbdc377e3bcb7743ae',
 
   'flutter': Var('flutter_git') + '/mirrors/flutter' + '@' + '2fdfa29e081bb368bf11b6177e4e9bb7c8ad4d34',
 
diff --git a/commits.json b/commits.json
index e5c2f41..16cb916 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "engine/src/flutter":"cef721963336c56e88127d82db6400ff1d247b26",
-  "engine/src/third_party/dart":"b8b70dececfc050ad77778f48a4e9990146d1e0f",
+  "engine/src/third_party/dart":"ce7c036db217b43014a05dcbdc377e3bcb7743ae",
   "flutter":"2fdfa29e081bb368bf11b6177e4e9bb7c8ad4d34"
 }
\ No newline at end of file