Remove APM-internal usage of EchoControlMobile

This is a sibling CL to a similar one for EchoCancellation:
https://webrtc-review.googlesource.com/c/src/+/97603

 - EchoControlMobileImpl will no longer inherit EchoControlMobile.
 - Removes usage of AudioProcessing::echo_control_mobile() inside most of
   the audio processing module and unit tests.

The CL breaks audioproc_f backwards compatibility: It can no longer
use all recorded settings (comfort noise, routing mode), but prints an
error message when unsupported settings are encountered.

Tested: audioproc_f with .wav and aecdump inputs.
Bug: webrtc:9535
Change-Id: I63c3c81bcaf44021315978e1a0f3e42173b988ce
Reviewed-on: https://webrtc-review.googlesource.com/101621
Reviewed-by: Alex Loiko <aleloi@webrtc.org>
Commit-Queue: Sam Zackrisson <saza@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24888}
diff --git a/modules/audio_processing/echo_control_mobile_impl.cc b/modules/audio_processing/echo_control_mobile_impl.cc
index 272da7a..bd125c6 100644
--- a/modules/audio_processing/echo_control_mobile_impl.cc
+++ b/modules/audio_processing/echo_control_mobile_impl.cc
@@ -20,17 +20,17 @@
 namespace webrtc {
 
 namespace {
-int16_t MapSetting(EchoControlMobile::RoutingMode mode) {
+int16_t MapSetting(EchoControlMobileImpl::RoutingMode mode) {
   switch (mode) {
-    case EchoControlMobile::kQuietEarpieceOrHeadset:
+    case EchoControlMobileImpl::kQuietEarpieceOrHeadset:
       return 0;
-    case EchoControlMobile::kEarpiece:
+    case EchoControlMobileImpl::kEarpiece:
       return 1;
-    case EchoControlMobile::kLoudEarpiece:
+    case EchoControlMobileImpl::kLoudEarpiece:
       return 2;
-    case EchoControlMobile::kSpeakerphone:
+    case EchoControlMobileImpl::kSpeakerphone:
       return 3;
-    case EchoControlMobile::kLoudSpeakerphone:
+    case EchoControlMobileImpl::kLoudSpeakerphone:
       return 4;
   }
   RTC_NOTREACHED();
@@ -55,7 +55,7 @@
 }
 }  // namespace
 
-size_t EchoControlMobile::echo_path_size_bytes() {
+size_t EchoControlMobileImpl::echo_path_size_bytes() {
   return WebRtcAecm_echo_path_size_bytes();
 }
 
@@ -268,7 +268,7 @@
   return Configure();
 }
 
-EchoControlMobile::RoutingMode EchoControlMobileImpl::routing_mode() const {
+EchoControlMobileImpl::RoutingMode EchoControlMobileImpl::routing_mode() const {
   rtc::CritScope cs(crit_capture_);
   return routing_mode_;
 }