- Move test cases for more natural ordering.
- Get rid of the CoInitialize tests for WVoE/WViE.

BUG=webrtc:4690
R=pbos@webrtc.org, tommi@webrtc.org

Review URL: https://codereview.webrtc.org/1319163002 .

Cr-Commit-Position: refs/heads/master@{#9817}