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This CL intends to create a prototyping Sanitizer API
(https://github.com/WICG/sanitizer-api) at very beginning
level.

Change-Id: I7327a3440d544b61becd81f4c9b058ee4823ffc4
Bug: 1116418
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2346252
Commit-Queue: Yifan Luo <lyf@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Reviewed-by: Daniel Vogelheim <vogelheim@chromium.org>
Reviewed-by: Yifan Luo <lyf@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800191}