Non trivially destructible objects with static storage are disallowed
by the style guide.
This CL just removes 'static' since these objects are constructed once
or twice in the entire application.
Bug: webrtc:9693
Change-Id: I7509e2c088dd5ec0ac13f08053ecb76cf8259d90
Reviewed-on: https://webrtc-review.googlesource.com/98840
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24634}