Improve the reliablity of the audio e2e test.

- Use higher quality resampling.
- Add a longer delay before pacat recording.

TBR=kjellander@webrtc.org
BUG=issue502
TEST=manually

Review URL: https://webrtc-codereview.appspot.com/646005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2374 4adac7df-926f-26a2-2b94-8c16560cd09d
3 files changed