Roll WebRTC 15447:15456 (8 commits)

Changes: https://chromium.googlesource.com/external/webrtc/trunk/webrtc.git/+log/afc16ca..666ab2c

$ git log afc16ca..666ab2c --date=short --no-merges --format=%ad %ae %s
2016-12-06 [email protected] Make ostream<< for enum class H264PacketizationMode
2016-12-06 [email protected] Use SSL_CTX_set_max_proto_version instead of SSL_CTX_set_max_version.
2016-12-06 [email protected] Remove deprecated comments
2016-12-06 [email protected] Relanding: Refactoring that removes P2PTransport and DtlsTransport classes.
2016-12-06 [email protected] Revert of Refactoring that removes P2PTransport and DtlsTransport classes. (patchset #9 id:150001 of https://codereview.webrtc.org/2517883002/ )
2016-12-06 [email protected] Add File::Open / Create functions to take an rtc::Pathname
2016-12-06 [email protected] Refactoring that removes P2PTransport and DtlsTransport classes.
2016-12-06 [email protected] Set the preferred DSCP value for Rtp data channel to be DSCP_AF41.

TBR=
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_chromium_archive_rel_ng;master.tryserver.chromium.mac:mac_chromium_archive_rel_ng
BUG=

Review-Url: https://codereview.chromium.org/2553223003
Cr-Commit-Position: refs/heads/master@{#436909}
diff --git a/DEPS b/DEPS
index b9e0afc..5d69d903 100644
--- a/DEPS
+++ b/DEPS
@@ -224,7 +224,7 @@
     Var('chromium_git') + '/native_client/src/third_party/scons-2.0.1.git' + '@' + '1c1550e17fc26355d08627fbdec13d8291227067',
 
   'src/third_party/webrtc':
-    Var('chromium_git') + '/external/webrtc/trunk/webrtc.git' + '@' + 'afc16cad576102d2d45f74626003f7241d8c07da', # commit position 15447
+    Var('chromium_git') + '/external/webrtc/trunk/webrtc.git' + '@' + '666ab2c1173e5411c3f81ebb0277644c978d136a', # commit position 15456
 
   'src/third_party/openmax_dl':
     Var('chromium_git') + '/external/webrtc/deps/third_party/openmax.git' + '@' +  Var('openmax_dl_revision'),