10975 Roll src/third_party/dart 06509e333d..9aea1f3489 (8 commits) (cla: yes)

10977 Roll src/third_party/dart 9aea1f3489..b9217efc77 (7 commits) (cla: yes)

10981 Roll src/third_party/dart b9217efc77..20407e28db (6 commits) (cla: yes)

10982 Revert “Track detailed LibTxt metrics” (cla: yes)

10983 Roll src/third_party/dart 20407e28db..45f892df68 (2 commits) (cla: yes)