redaction_tool: Add //b/t/m/histogram_tester to test_support

The upstream changes make use of histogram_tester in the unit tests.
Upstream the histogram_tester is part of test_support but this wasn't
the case in libchrome until now.

BUG=b:282648206
TEST=None

Change-Id: Ibd9898ea3d2db9a16aab8ef2209531e299e3da37
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/libchrome/+/4537039
Auto-Submit: Christoph Schlosser <cschlosser@chromium.org>
Reviewed-by: Grace Cham <hscham@chromium.org>
Commit-Queue: Grace Cham <hscham@chromium.org>
Tested-by: Christoph Schlosser <cschlosser@chromium.org>
1 file changed
tree: 78c48c3b43fad55ce4e982039ecb9c0fd2c72ec3
  1. base/
  2. build/
  3. components/
  4. crypto/
  5. dbus/
  6. device/
  7. ipc/
  8. libchrome_tools/
  9. mojo/
  10. soong/
  11. testing/
  12. third_party/
  13. ui/
  14. .gitignore
  15. BASE_VER
  16. BUILD.gn
  17. BUILD.IGNORE
  18. DIR_METADATA
  19. MODULE_LICENSE_BSD
  20. NOTICE
  21. OWNERS
  22. PRESUBMIT.cfg
  23. README.md
  24. testrunner.cc
  25. unblocked_terms.txt
README.md

libchrome

Overview

This directory includes the source from Chrome's libbase for use in Chrome OS.

See libchrome.md for more info.