Reland "Refactor webrtc/modules/video_processing for GN check"
Reland "Refactor webrtc/modules/video_processing for GN check"

This reverts commit d39e16ac300d7947d22b953898aaef073e553ad3.

This will fix the missing dependency which was causing the failure of many
buildbots.

BUG=webrtc:6828
NOTRY=True

Review-Url: https://codereview.webrtc.org/2597643002
Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#15805}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 6d3c57300b8399355e054565f285719e888bd452

Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk