Revert "Updating trunk VERSION from 2134.0 to 2135.0"

This reverts commit 1d8498da.

This didn't need to bump because the earlier, failed branching run never got
far enough to create 2134 branch.

Cr-Commit-Position: refs/heads/master@{#291616}

chrome/VERSION

 MAJOR=39
 MINOR=0
-BUILD=2135
+BUILD=2134
 PATCH=0