Disabled flaky test TestFrameBuffer2.OneLayerStreamReordered

TBR=stefan@webrtc.org

BUG=

Review URL: https://codereview.webrtc.org/2000573002 .

Cr-Commit-Position: refs/heads/master@{#12821}
diff --git a/webrtc/modules/video_coding/frame_buffer2_unittest.cc b/webrtc/modules/video_coding/frame_buffer2_unittest.cc
index cc1703a..7e4e220 100644
--- a/webrtc/modules/video_coding/frame_buffer2_unittest.cc
+++ b/webrtc/modules/video_coding/frame_buffer2_unittest.cc
@@ -211,7 +211,7 @@
   CheckFrame(1, pid, 1);
 }
 
-TEST_F(TestFrameBuffer2, OneLayerStreamReordered) {
+TEST_F(TestFrameBuffer2, DISABLED_OneLayerStreamReordered) {
   uint16_t pid = Rand();
   uint32_t ts = Rand();