Limit disabling of PeerConnectionEndToEndTest.Call to Windows
Limit disabling of PeerConnectionEndToEndTest.Call to Windows

The test seems to be flaky only on Windows.

BUG=4464
TBR=kjellander@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/44829004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#8835}
git-svn-id: 917f5d3ca488f358c4d40eaec14422cf392ccec9@8835 4adac7df-926f-26a2-2b94-8c16560cd09d

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