Automated Commit: Committing new LKGM version 8121.0.0 for chromeos.

Cr-Commit-Position: refs/heads/master@{#383683}
diff --git a/chromeos/CHROMEOS_LKGM b/chromeos/CHROMEOS_LKGM
index 2671e87e7..e9bab927 100644
--- a/chromeos/CHROMEOS_LKGM
+++ b/chromeos/CHROMEOS_LKGM
@@ -1 +1 @@
-8119.0.0
\ No newline at end of file
+8121.0.0
\ No newline at end of file