Adding video_processing to presubmit lint check
Adding video_processing to presubmit lint check

BUG=webrtc:5259
R=pbos@webrtc.org

Review URL: https://codereview.webrtc.org/1507213002 .

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#10928}

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