Stop using deprecated audio processing module ptr-to-submodule API

This CL does not change any functionality.

Bug: webrtc:9878
Change-Id: I55309aea7db79d0c42d075b852bdb6b33b1d059d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1619812
Reviewed-by: Max Morin <maxmorin@chromium.org>
Commit-Queue: Sam Zackrisson <saza@chromium.org>
Cr-Commit-Position: refs/heads/master@{#662110}
4 files changed