Enable big largeroom fullstack tests on Windows

BUG=webrtc:7301

Review-Url: https://codereview.webrtc.org/2741823003
Cr-Commit-Position: refs/heads/master@{#17169}

webrtc/video/full_stack_tests.cc

diff --git a/webrtc/video/full_stack_tests.cc b/webrtc/video/full_stack_tests.cc
index e59280a..c4c0603 100644
--- a/webrtc/video/full_stack_tests.cc
+++ b/webrtc/video/full_stack_tests.cc
@@ -534,7 +534,7 @@
   RunTest(large_room);
 }
 
-#if defined(WEBRTC_ANDROID) || defined(WEBRTC_WIN)
+#if defined(WEBRTC_ANDROID)
 // Fails on Android and win:
 // https://bugs.chromium.org/p/webrtc/issues/detail?id=7301
 #define MAYBE_LargeRoomVP8_50thumb DISABLED_LargeRoomVP8_50thumb