Revert of Bump s-o-m to version 2. (patchset #1 id:1 of https://chromiumcodereview.appspot.com/657963002/)

Reason for revert:
don't use app.yaml revision

Original issue's description:
> Bump s-o-m to version 2.
> 
> TBR=ojan@chromium.org
> NOTRY=true
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=183768

TBR=ojan@chromium.org
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/660653002

git-svn-id: svn://svn.chromium.org/blink/trunk@183770 bbb929c8-8fbe-4397-9dbb-9b2b20218538