Redo 587688 and 592088 to add histograms in capturer

This change redoes
https://chromium-review.googlesource.com/587688
and
https://chromium-review.googlesource.com/592088

The above two changes added histograms in webrtc capturer implementations to
track the edge cases.

After change https://chromium-review.googlesource.com/c/617845, this change
should be safe to be merged into webrtc.

Bug: webrtc:8040, webrtc:8046
Change-Id: I28b9f26227a5a231c918969d8280ede91015dbe4
Reviewed-on: https://chromium-review.googlesource.com/615852
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Commit-Queue: Zijie He <zijiehe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#19437}
3 files changed
tree: 334050b02ceba7be7def2e09f2bf16c1031cb5c6
  1. build_overrides/
  2. data/
  3. infra/
  4. resources/
  5. tools_webrtc/
  6. webrtc/
  7. .clang-format
  8. .git-blame-ignore-revs
  9. .gitignore
  10. .gn
  11. AUTHORS
  12. BUILD.gn
  13. CODE_OF_CONDUCT.md
  14. codereview.settings
  15. DEPS
  16. LICENSE
  17. license_template.txt
  18. LICENSE_THIRD_PARTY
  19. OWNERS
  20. PATENTS
  21. PRESUBMIT.py
  22. pylintrc
  23. README.md
  24. WATCHLISTS
README.md

WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.

Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.

The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others.

Development

See http://www.webrtc.org/native-code/development for instructions on how to get started developing with the native code.

More info