[kernel] Constant coverage recorded in dill

This adds the recorded constant coverage to the dill file.

runtimes for constant evaluation:
dart2js: No difference proven at 95.0% confidence
flutter gallery: No difference proven at 95.0% confidence
big internal app: No difference proven at 95.0% confidence

sdk sizes:
vm: ~0.0182%
dart2js: ~0.0137%
flutter: ~0.0197%

compile sizes:
dart2js: ~0.0179%
flutter gallery: ~0.0162%
big internal app: ~0.0414%

TEST=test was fixed.

Change-Id: I347751e4d96d4d62140d26ebe37960f46a0dfbfa
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/171948
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>

https://dart.googlesource.com/sdk/+/27ed7912af86426288107bfaa09b31c36099e4ba
diff --git a/commits.json b/commits.json
index d40c515..51d64d5 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"a4ce848dfb6fb002544494e762f53a826830cc1d",
   "external/github.com/flutter/flutter":"a7f5fd5360007518644597c60a1f2169eacccc2b",
-  "sdk":"33b7721c51ad499f8a6adf9c0366ca1bfcbbe84b"
+  "sdk":"27ed7912af86426288107bfaa09b31c36099e4ba"
 }
\ No newline at end of file