Add magjed@webrtc.org as owner of webrtc/base/java/
Add magjed@webrtc.org as owner of webrtc/base/java/

magjed@ is the author of two out of three files in webrtc/base/java
(ThreadUtils.java and Size.java). They were originally created in
webrtc/api/android/java, but were moved to base/ in order to be
accessible from e.g. webrtc/modules/audio_device/android/java.

TBR=tommi@webrtc.org

Review URL: https://codereview.webrtc.org/2233793002 .

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#13707}

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