More ThreadSanitizer v2 suppressions:
 - races in v8 teardown (issue 347534)
 - races on the ticks counter in usrsctp (issue 347538)
 - race on FLAG_track_double_fields in v8 (issue v8:3143)
 - race in media::DataSource::set_host (issue 345624)
 - races on WebRtcVideoMediaChannel::send_codec_ (issue 347548)
 - races on Blink string refcounters (issue 347553)
 - races in third_party/WebKit/Source/heap/ThreadState.cpp (issue 347559)
 - remove the suppressions for issue 328804 (fixed in V8 r19400)

BUG=347534,347538,328804,v8:3143,345624,347548,347553,347559
TBR=timurrrr@chromium.org

Review URL: https://codereview.chromium.org/183263002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253832 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253832