Corresponds to upstream commit 524e9b043e7e86fd72353b987c9d5f6a1ebf83e1
Update notes:
* Pull in third party license file
* Replace .gypi files with BUILD.gn to keep track of what changes
upstream
* Bunch of new filse pulled in as dependencies
* Won't build yet due to changes needed on top of these
Corresponds to upstream commit 524e9b043e7e86fd72353b987c9d5f6a1ebf83e1
Update notes:
* Moved src/ to webrtc/ to easily diff against the third_party/webrtc
in the chromium tree
* ARM/NEON/MIPS support is not yet hooked up
* Tests have not been copied