Disable failing modules_unittests for UBSan.

webrtc/modules/audio_processing/test/debug_dump_test.cc

Index: webrtc/modules/audio_processing/test/debug_dump_test.cc
diff --git a/webrtc/modules/audio_processing/test/debug_dump_test.cc b/webrtc/modules/audio_processing/test/debug_dump_test.cc
index 3acb69444d9334d2575d4ea813e449138775e751..f68c175e5d9df82cb7435ec0bf99d3b93fff0abc 100644
--- a/webrtc/modules/audio_processing/test/debug_dump_test.cc
+++ b/webrtc/modules/audio_processing/test/debug_dump_test.cc
@@ -262,6 +262,8 @@ void DebugDumpTest::VerifyDebugDump(const std::string& in_filename) {
   }
 }
 
+// Disabled for UBSan: https://bugs.chromium.org/p/webrtc/issues/detail?id=5820
+#ifndef UNDEFINED_SANITIZER
 TEST_F(DebugDumpTest, SimpleCase) {
   Config config;
   DebugDumpGenerator generator(config);
@@ -525,5 +527,7 @@ TEST_F(DebugDumpTest, TransientSuppressionOn) {
   VerifyDebugDump(generator.dump_file_name());
 }
 
+#endif  // !UNDEFINED_SANITIZER
+
 }  // namespace test
 }  // namespace webrtc