Remove dependencies on modules:module_api from AudioProcessing.

- Directly include api/audio/audio_frame.h everywhere AudioFrame is used.
- This *will* remove transient dependencies on libjpeg and a bunch of other things from the e.g. APM.
- audio_frame.h still included from module_common_types.h for backwards compatibility with clients.

Bug: webrtc:9139, webrtc:7504
Change-Id: Id96f9268c01667fbcc29a01f5c1dd25a37836897
Reviewed-on: https://webrtc-review.googlesource.com/62464
Commit-Queue: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22845}
diff --git a/BUILD.gn b/BUILD.gn
index de5e773..25a2fb4 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -425,6 +425,7 @@
     deps = [
       ":webrtc_common",
       "api:rtc_api_unittests",
+      "api/audio/test:audio_api_unittests",
       "api/audio_codecs/test:audio_codecs_api_unittests",
       "p2p:libstunprober_unittests",
       "p2p:rtc_p2p_unittests",