This keeps the public directory just for the API. Tests, like other implementation details, are hidden out of it. Also add comment to document this.
Also remove injection_test_win.h which is no longer used.
Change-Id: I89d43d6f473253a6fb890df9e50728169aac2389
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2739143
Auto-Submit: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Charlie Reis <creis@chromium.org>
Reviewed-by: Charlie Reis <creis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#866931}