Artem Titov 728a0ee459 Reland "Introduce ability to test echo in PC level test framework"
This is a reland of 77acb015b6ba886da3e7adb9c2106cf873fa8497

Original change's description:
> Introduce ability to test echo in PC level test framework
> 
> Bug: webrtc:10138
> Change-Id: Ie638eaec5a46e37dc0eb52e9432fdebd0e4a1c4d
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/147866
> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Reviewed-by: Sam Zackrisson <saza@webrtc.org>
> Commit-Queue: Artem Titov <titovartem@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#28892}

Bug: webrtc:10138
Change-Id: I0358239500ffadbdbae8090bf39535386fbfd40c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/149805
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Sam Zackrisson <saza@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28917}
2019-08-20 12:18:28 +00:00
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2019-07-08 13:45:15 +00:00

How to write code in the api/ directory

Mostly, just follow the regular style guide, but:

  • Note that api/ code is not exempt from the “.h and .cc files come in pairs” rule, so if you declare something in api/path/to/foo.h, it should be defined in api/path/to/foo.cc.
  • Headers in api/ should, if possible, not #include headers outside api/. Its not always possible to avoid this, but be aware that it adds to a small mountain of technical debt that were trying to shrink.
  • .cc files in api/, on the other hand, are free to #include headers outside api/.

That is, the preferred way for api/ code to access non-api/ code is to call it from a .cc file, so that users of our API headers wont transitively #include non-public headers.

For headers in api/ that need to refer to non-public types, forward declarations are often a lesser evil than including non-public header files. The usual rules still apply, though.

.cc files in api/ should preferably be kept reasonably small. If a substantial implementation is needed, consider putting it with our non-public code, and just call it from the api/ .cc file.