(the ones that were recently moved from c)
There are many files changed but most changes just
consist of adding namespaces.
In aec_common.h an C++-specific #ifdef needed to be added as
that file is both included from C and C++. I could see no
way around that but please let me know if there is a better
way around that.
BUG=webrtc:5201
Review URL: https://codereview.webrtc.org/1766663002
Cr-Commit-Position: refs/heads/master@{#11883}