Merge third_party/libjingle/source/talk from https://chromium.googlesource.com/external/webrtc/trunk/talk.git at 1f59bcb2ae6b867fb2f52ff4654b137f98b30536

This commit was generated by merge_from_chromium.py.

Change-Id: Ic6f021ebece4c960a234811c11205565441e01dc