Incrementing VERSION to 62.0.3202.12

TBR=dimu@chromium.org

Change-Id: Ief163a0110c056916292a0a1f505fecd7cd0cb23
Reviewed-on: https://chromium-review.googlesource.com/654319
Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/branch-heads/3202@{#58}
Cr-Branched-From: fa6a5d8-refs/heads/master@{#499098}

Author: chrome-release-bot

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=62
 MINOR=0
 BUILD=3202
-PATCH=11
+PATCH=12