Disable tests failing under UBSan to enable deployment to main waterfall.

webrtc/base/bandwidthsmoother_unittest.cc

 /*
  *  Copyright 2011 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 70 matching lines @@
   EXPECT_EQ(1000, mon.get_bandwidth_estimation());
   EXPECT_FALSE(mon.Sample(1, kBandwidthSample));
   EXPECT_FALSE(mon.Sample(2, kBandwidthSample));
   EXPECT_FALSE(mon.Sample(3, kBandwidthSample));
   EXPECT_FALSE(mon.Sample(4, kBandwidthSample));
   EXPECT_EQ(1000, mon.get_bandwidth_estimation());
   EXPECT_TRUE(mon.Sample(5, kBandwidthSample));
   EXPECT_EQ(kBandwidthSample, mon.get_bandwidth_estimation());
 }
 
-TEST(BandwidthSmootherTest, TestSampleRollover) {
+// Disabled for UBSan: https://bugs.chromium.org/p/webrtc/issues/detail?id=5491
+#ifdef UNDEFINED_SANITIZER
+#define MAYBE_TestSampleRollover DISABLED_TestSampleRollover
+#else
+#define MAYBE_TestSampleRollover TestSampleRollover
+#endif
+TEST(BandwidthSmootherTest, MAYBE_TestSampleRollover) {
   const int kHugeBandwidth = 2000000000;  // > INT_MAX/1.1
   BandwidthSmoother mon(kHugeBandwidth,
                         kTimeBetweenIncrease,
                         kPercentIncrease,
                         kSamplesCountToAverage,
                         kMinSampleCountPercent);
 
   EXPECT_FALSE(mon.Sample(10, INT_MAX));
   EXPECT_FALSE(mon.Sample(11, INT_MAX));
   EXPECT_EQ(kHugeBandwidth, mon.get_bandwidth_estimation());
 }
 
 TEST(BandwidthSmootherTest, TestSampleNegative) {
   BandwidthSmoother mon(1000,  // initial_bandwidth_guess
                         kTimeBetweenIncrease,
                         kPercentIncrease,
                         kSamplesCountToAverage,
                         kMinSampleCountPercent);
 
   EXPECT_FALSE(mon.Sample(10, -1));
   EXPECT_FALSE(mon.Sample(11, -1));
   EXPECT_EQ(1000, mon.get_bandwidth_estimation());
 }
 
 }  // namespace rtc