Revert "Update copyright headers in base/"

This reverts commit eccb7e810759b29ab848101e0309f35603fc8683.

Reason for revert: https://crbug.com/1361092

Original change's description:
> Update copyright headers in base/
>
> The methodology used to generate this CL is documented in
> https://crbug.com/1098010#c21.
>
> No-Try: true
> Bug: 1098010
> Change-Id: Icd01cc1648eab4b0550afcff2bee17076359a132
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3879904
> Owners-Override: Avi Drissman <avi@chromium.org>
> Commit-Queue: Avi Drissman <avi@chromium.org>
> Auto-Submit: Avi Drissman <avi@chromium.org>
> Reviewed-by: Mark Mentovai <mark@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1044191}

Bug: 1098010
Change-Id: Iefdde85d3d44fabe09906cd725b39a4e0b359491
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3880811
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1044252}
NOKEYCHECK=True
GitOrigin-RevId: 3d1108defc24046ab3b8277fad46912cbc5ec5c9
1 file changed
tree: 7ea1d4c7c53980166bc5e01e6e2da5b9cef4d48d
  1. trace_event_common.h