This methods multiplies an int with 500. This cl ensure that does not overflow. BUG=none Change-Id: I2c4c4c169baf3bbc2cac021e87e396c605cd1815 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/141860 Commit-Queue: Per Kjellander <perkj@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28310}