The steps involved were:
1) Change file name to .cc from .c.
2) Update the build files accordingly.
3) Remove the extern header file inclusion.
4) Change the casts in aec_resampler.cc to static_cast
and reinterpret_cast.
The changes are bitexact.
The CL will be followed with another CL where a proper (webrtc) namespace is introduced. The reason for not having it in this CL is that this was missed in the corresponding
CL that did the above for aec_core.c, ..., and if the
namespaces in all the aec_core -related files can be changed
at the same time that will simplify things.
BUG=webrtc:5201
Review URL: https://codereview.webrtc.org/1754223004
Cr-Commit-Position: refs/heads/master@{#11867}
88950cfbf9