Tested on Linux with the following command lines:
$ ./webrtc/build/gyp_webrtc -Dclang_use_chrome_plugins=1
$ ninja -C out/Release rtc_sound
BUG=webrtc:163
R=perkj@webrtc.org
Review URL: https://codereview.webrtc.org/1425533003
Cr-Commit-Position: refs/heads/master@{#10447}