[MemSheriff] Update TSan suppressions.

build/sanitizers/tsan_suppressions.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file contains the default suppressions for ThreadSanitizer.
 // You can also pass additional suppressions via TSAN_OPTIONS:
 // TSAN_OPTIONS=suppressions=/path/to/suppressions. Please refer to
 // http://dev.chromium.org/developers/testing/threadsanitizer-tsan-v2
 // for more info.
 
@@ skipping 106 matching lines @@
 "race:SamplingStateScope\n"
 "race:g_trace_state\n"
 
 // http://crbug.com/258499
 "race:third_party/skia/include/core/SkRefCnt.h\n"
 
 // http://crbug.com/268924
 "race:base::g_power_monitor\n"
 "race:base::PowerMonitor::PowerMonitor\n"
 "race:base::PowerMonitor::AddObserver\n"
+"race:base::PowerMonitor::RemoveObserver\n"
+"race:base::PowerMonitor::IsOnBatteryPower\n"
 
 // http://crbug.com/268941
 "race:tracked_objects::ThreadData::tls_index_\n"
 
 // http://crbug.com/270037
 "race:gLibCleanupFunctions\n"
 
 // http://crbug.com/272095
 "race:base::g_top_manager\n"
 
@@ skipping 155 matching lines @@
 // http://crbug.com/389098
 "race:webrtc::RtpToNtpMs\n"
 "race:webrtc::UpdateRtcpList\n"
 "race:webrtc::RemoteNtpTimeEstimator::Estimate\n"
 "race:webrtc::voe::TransmitMixer::EnableStereoChannelSwapping\n"
 
 // http://crbug.com/397022
 "deadlock:"
 "base::debug::TraceEventTestFixture_ThreadOnceBlocking_Test::TestBody\n"
 
+// http://crbug.com/412764
+"race:media::WallClockTimeSource::SetPlaybackRate\n"
+
 // End of suppressions.
 ;  // Please keep this semicolon.
 
 #endif  // THREAD_SANITIZER