Bump branch number after branching refs/heads/stabilize-8447.B

Change-Id: I8162d957672fc374ddbe9e52f619257da8e0fba4
diff --git a/chromeos/config/chromeos_version.sh b/chromeos/config/chromeos_version.sh
index e5a1c75..65dc88d 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.
-  export CHROMEOS_BRANCH=0
+  export CHROMEOS_BRANCH=1
 
   # Patch number.
   # Increment by 1 in case a non-scheduled branch release build is necessary.