Disable failing fullstack test with 15 thumbnail streams

webrtc/video/video_quality_test.cc

Index: webrtc/video/video_quality_test.cc
diff --git a/webrtc/video/video_quality_test.cc b/webrtc/video/video_quality_test.cc
index 48347d7b4e0691a57b634a4afc6e3637c4b9b6c9..a938bb8a523fd289b4f1a51d16178dd7b26bb0ca 100644
--- a/webrtc/video/video_quality_test.cc
+++ b/webrtc/video/video_quality_test.cc
@@ -1515,6 +1515,7 @@ void VideoQualityTest::SetupThumbnailCapturers(size_t num_thumbnail_streams) {
     thumbnail_capturers_.emplace_back(test::FrameGeneratorCapturer::Create(
         static_cast<int>(thumbnail.width), static_cast<int>(thumbnail.height),
         thumbnail.max_framerate, clock_));
+    RTC_DCHECK(thumbnail_capturers_.back());

[sprang_webrtc, 2017/03/07 13:49:26]

Any idea why this would fail? Out of memory?

   }
 }