Automatic: trogdor-release - Updating to a new version number from 13278.19.0

Change-Id: I046621ce10d3a0a83ba5506a779825789a784c50
diff --git a/chromeos/config/chromeos_version.sh b/chromeos/config/chromeos_version.sh
index 4bf8b04..fc2f989 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=19
+  CHROMEOS_BRANCH=20
 
   # Patch number.
   # Increment by 1 in case a non-scheduled branch release build is necessary.