WebRtcEventlogHostTest.TwoPeerConnectionsTest appears to be very flaky on Windows.

https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=content_unittests&tests=WebRtcEventlogHostTest.TwoPeerConnectionsTest

Patch to disable test on Windows: https://chromium-review.googlesource.com/c/594429/

mcasas@, guidou@: Could you PTAL at this test and see why it's flaky on Windows? Thanks!

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f9491126d9b155bffa2a3f15c420a653ca367fc8

commit f9491126d9b155bffa2a3f15c420a653ca367fc8
Author: Adithya Srinivasan <adithyas@chromium.org>
Date: Mon Jul 31 18:49:47 2017

Disable WebRtcEventlogHostTest.TwoPeerConnectionsTest on Win

Bug:  750708 
Change-Id: I283ee164229f46c15e0fd9db95aa1347383a6405
TBR: ivoc
Reviewed-on: https://chromium-review.googlesource.com/594429
Reviewed-by: Adithya Srinivasan <adithyas@chromium.org>
Commit-Queue: Adithya Srinivasan <adithyas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490787}
[modify] https://crrev.com/f9491126d9b155bffa2a3f15c420a653ca367fc8/content/browser/webrtc/webrtc_eventlog_host_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/57781f843c7f278b80f9b7dc1403680a9eac939a

commit 57781f843c7f278b80f9b7dc1403680a9eac939a
Author: Ivo Creusen <ivoc@chromium.org>
Date: Wed Aug 09 09:26:24 2017

Make WebRtcEventlogHostTest.* non-flaky.

The result of the tests was dependent on the order of thread scheduling, which led to flakiness. The disabled tests are reenabled.

Bug:  740251 ,  750708 
Change-Id: I2bdc617c4ef674e678b2489e24653679963d58fe
Reviewed-on: https://chromium-review.googlesource.com/606247
Commit-Queue: Ivo Creusen <ivoc@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#492918}
[modify] https://crrev.com/57781f843c7f278b80f9b7dc1403680a9eac939a/content/browser/webrtc/webrtc_eventlog_host_unittest.cc