Changed lowercase consts to UPPERCASE in call_box

BUG=NONE
TEST=run_all_tests.py

Change-Id: Iaa681d71803bc5881a17b08493ec7b6e67d8fd5d
Reviewed-on: https://gerrit.chromium.org/gerrit/63807
Reviewed-by: Ben Chan <[email protected]>
Tested-by: Byron Kubert <[email protected]>
Commit-Queue: Byron Kubert <[email protected]>
5 files changed