6801b4dae Roll src/third_party/dart eff5548a684a..7079c49b054e (1 commits) (flutter/engine#17165) (#52648)

diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 7558166..5f912bd 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-3e02f3bec91ea911a307e8e5519035576ba21fcc
+6801b4dae791e458db94775d675fec1fb5efb15f