Add runhooks for WebRTC Android APK Tester builders (fix)
Add runhooks for WebRTC Android APK Tester builders (fix)

https://codereview.chromium.org/131513009/ contained
and error that changed the factory for the Testers from
ChromiumFactory to WebRTCFactory, rendering the checkout useless.
This CL corrects this.

TBR=phoglund@chromium.org
BUG=

Review URL: https://codereview.chromium.org/146753002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@246858 0039d316-1c4b-4281-b951-d872f2087c98

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