Add Android x86 and x64 trybots to CQ.
Add Android x86 and x64 trybots to CQ.

They're both green:
https://build.chromium.org/p/tryserver.webrtc/builders/android_compile_x86_dbg
https://build.chromium.org/p/tryserver.webrtc/builders/android_compile_x64_dbg

BUG=559010
R=phoglund@webrtc.org

Review URL: https://codereview.webrtc.org/1468893002 .

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#10743}

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