TSan: Move suppressions to source file.

Chromium has deprecated text-file based suppressions for
TSan (v2) and is about to remove the support for it in the
test toolchain in https://codereview.chromium.org/357673002/

This CL moves our suppressions to a source file (based on the
Chromium copy).
It also moves the sanitizer_options.gyp into webrtc/build.

BUG=chromium:302040
TEST=Locally executing all the standalone tests under TSan v2.
R=niklas.enbom@webrtc.org, pbos@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/14759004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6552 4adac7df-926f-26a2-2b94-8c16560cd09d

tools/valgrind-webrtc/tsan_v2/suppressions.txt

@@ -1,46 +0,0 @@
-# False positive in system wrappers.
-# See https://code.google.com/p/webrtc/issues/detail?id=300 for details.
-race:webrtc/system_wrappers/source/thread_posix.cc
-
-# Audio processing
-# See https://code.google.com/p/webrtc/issues/detail?id=2521 for details.
-race:webrtc/modules/audio_processing/aec/aec_core.c
-race:webrtc/modules/audio_processing/aec/aec_rdft.c
-
-# Video coding
-# See https://code.google.com/p/webrtc/issues/detail?id=2484 for details.
-# race:webrtc/modules/video_coding/codecs/vp8/vp8_impl.cc
-
-# libjingle_p2p_unittest
-# See https://code.google.com/p/webrtc/issues/detail?id=2079
-race:webrtc/base/messagequeue.cc
-race:webrtc/base/testclient.cc
-race:webrtc/base/virtualsocketserver.cc
-race:talk/base/messagequeue.cc
-race:talk/base/testclient.cc
-race:talk/base/virtualsocketserver.cc
-race:talk/p2p/base/stunserver_unittest.cc
-
-# libjingle_unittest
-# See https://code.google.com/p/webrtc/issues/detail?id=2080
-race:webrtc/base/logging.cc
-race:webrtc/base/sharedexclusivelock_unittest.cc
-race:webrtc/base/signalthread_unittest.cc
-race:webrtc/base/thread.cc
-race:talk/base/logging.cc
-race:talk/base/sharedexclusivelock_unittest.cc
-race:talk/base/signalthread_unittest.cc
-race:talk/base/thread.cc
-
-# third_party/usrsctp
-# TODO(jiayl): https://code.google.com/p/webrtc/issues/detail?id=3492
-race:third_party/usrsctp/usrsctplib/user_sctp_timer_iterate.c
-
-# Potential deadlocks detected after roll in r6516.
-# https://code.google.com/p/webrtc/issues/detail?id=3509
-deadlock:talk/base/criticalsection.h
-deadlock:talk/base/sigslot.h
-deadlock:webrtc/system_wrappers/source/critical_section_posix.cc
-deadlock:webrtc/system_wrappers/source/rw_lock_posix.cc
-deadlock:webrtc/system_wrappers/source/thread_posix.cc
-