We are moving the whole content of "webrtc/build" to new
locations (see crbug.com/611808 for further information).
The new location for the "webrtc/build/android" stuff is
"tools-webrtc/android".
BUG=webrtc:7030
Review-Url: https://codereview.webrtc.org/2647343006
Cr-Commit-Position: refs/heads/master@{#16269}
