MB: Make commit-/trybots identical + add OpenH264 for all desktop configs
MB: Make commit-/trybots identical + add OpenH264 for all desktop configs

We actually run with OpenH264 enabled on all the desktop platforms:
https://cs.chromium.org/chromium/build/scripts/slave/recipe_modules/webrtc/chromium_config.py?rcl=0&l=48
We also have dcheck_always_enabled=1 both on commit- and trybots
(which is different from Chromium):
https://cs.chromium.org/chromium/build/scripts/slave/recipe_modules/webrtc/chromium_config.py?rcl=0&l=15

I also made a few alphabetic sorting of configs to get more consistency.

BUG=589510
NOTRY=True
TBR=ehmaldonado@webrtc.org

Review-Url: https://codereview.webrtc.org/2228053004
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#13697}

ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc