Merge third_party/libjingle/source/talk from https://chromium.googlesource.com/external/webrtc/trunk/talk.git at 5910fdfb2ca4b12096bdc5c64aee0afc7f93d426

This commit was generated by merge_from_chromium.py.

Change-Id: Ib80d377fe0896551345c165d3b3809b4f66ded80