Partially revert "WebRTC: Switch client.webrtc Android bots over to recipes."
Partially revert "WebRTC: Switch client.webrtc Android bots over to recipes."

This reverts the change in the waterfall config of r262688.
When deploying to the live master, a few quirks were detected
that will need to be addressed before moving over these builders
to recipes.

BUG=346198
TBR=phoglund

Review URL: https://codereview.chromium.org/232643002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@262948 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build