Revert "Re-enable WebRtcAudioQualityBrowserTest on Windows."

This reverts commit f6a88e10.

Reason for revert: Started failing on Win FYI bots immediately

Original change's description:
> Re-enable WebRtcAudioQualityBrowserTest on Windows.
> 
> The sound card has been re-installed on all win bots so this should
> work now.
> 
> Bug: chromium:677256
> Change-Id: I993f14dc8e6c4bb1ace09d1a793b1e79214209fe
> Reviewed-on: https://chromium-review.googlesource.com/768379
> Reviewed-by: Guido Urdaneta <guidou@chromium.org>
> Commit-Queue: Patrik Höglund <phoglund@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#516262}

TBR=phoglund@chromium.org,guidou@chromium.org

Change-Id: I671a5c1e15ddeae3fa86d120747cc9649ee8326a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:677256
Reviewed-on: https://chromium-review.googlesource.com/769527Reviewed-by: Emircan Uysaler <emircan@chromium.org>
Commit-Queue: Niklas Enbom <niklase@chromium.org>
Cr-Commit-Position: refs/heads/master@{#516399}

chrome/browser/media/webrtc/webrtc_audio_quality_browsertest.cc

@@ -66,10 +66,12 @@ const int kMaxAgcSegmentDiffMs =
   200;
 #endif
 
-#if defined(OS_LINUX) || defined(OS_WIN) || defined(OS_MACOSX)
+#if defined(OS_LINUX) || defined(OS_MACOSX)
 #define MAYBE_WebRtcAudioQualityBrowserTest WebRtcAudioQualityBrowserTest
 #else
 // Not implemented on Android, ChromeOS etc.
+// Also disabled on Windows due to
+// https://bugs.chromium.org/p/chromium/issues/detail?id=677256
 #define MAYBE_WebRtcAudioQualityBrowserTest DISABLED_WebRtcAudioQualityBrowserTest
 #endif