Incremented to version: 13259.251.0

Change-Id: I542f6f71b2d41120448ce14dac9bf62f5560fb6f
diff --git a/chromeos/config/chromeos_version.sh b/chromeos/config/chromeos_version.sh
index c773992..0b36ab6 100755
--- a/chromeos/config/chromeos_version.sh
+++ b/chromeos/config/chromeos_version.sh
@@ -20,7 +20,7 @@
   # Release Branch number.
   # Increment by 1 for every release build on a branch.
   # Reset to 0 when increasing release build number.
-  CHROMEOS_BRANCH=250
+  CHROMEOS_BRANCH=251
 
   # Patch number.
   # Increment by 1 in case a non-scheduled branch release build is necessary.