Merge third_party/libjingle/source/talk from https://chromium.googlesource.com/external/webrtc/trunk/talk.git at 13b2d035e2e7f2f18e3a4d3377bc1a09f43a4ff9

This commit was generated by merge_from_chromium.py.

Change-Id: I26c0986cbddf77c497863248d5ceab055993649d