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1. Removed people long-gone from the project (by several years).
2. Added xjz@ for cast streaming files.
3. Fixed/Added "# COMPONENT" comments to help redirect new crbugs.

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: I1a549a4f85e76f563a162263e90268de57daddab
Reviewed-on: https://chromium-review.googlesource.com/1065089Reviewed-by: Xiangjun Zhang <xjz@chromium.org>
Reviewed-by: John Rummell <jrummell@chromium.org>
Commit-Queue: Yuri Wiitala <miu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#560320}