Vp9Parser: clean up braces to allign with the coding style

Remove the extra braces added in cl:
https://chromium-review.googlesource.com/c/1396479

TBR=hiroh@chromium.org

Change-Id: I52cc1702474aaa5cb0ff5d9b307864c996c24ae9
Reviewed-on: https://chromium-review.googlesource.com/c/1396796
Commit-Queue: Miguel Casas <mcasas@chromium.org>
Reviewed-by: Miguel Casas <mcasas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#620192}
1 file changed