Add kwiberg@ to gtest-parallel OWNERS.
Add kwiberg@ to gtest-parallel OWNERS.

Also add ehmaldonado@webrtc.org as owner for gtest-parallel-wrapper.py.

R=kwiberg@webrtc.org
BUG=

Review URL: https://codereview.webrtc.org/2558093002 .

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#15462}

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