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These tables are constant, so it makes sense for all encoders to share one copy---but it was initialized in a racy way, and there's no appealing way to fix that without adding dependencies on locking functions. So we simply give each codec instance its own copy, which costs 8 * (240 + 240 + 120 + 120) = 5760 bytes apiece. As noted in the TODO comment, the size of the tables could be reduced, and they could be filled in at compile-time, but that would make the encoder output slightly different, which would mess with our tests. R=henrik.lundin@webrtc.org, solenberg@webrtc.org Review URL: https://codereview.webrtc.org/1177993003. Cr-Commit-Position: refs/heads/master@{#9442}