Add one-stop-shop for built-in AEC toggling in APM

This does not change what AEC functionality is available.
However, a client that only uses this interface - and not the submodule
pointer accessors - gets simpler code, and is guaranteed not to run any
two AECs in tandem.

The submodule interface EchoControlMobile is being deprecated in
https://webrtc-review.googlesource.com/c/src/+/89392

Bug: webrtc:9535
Change-Id: Id9326074e566be6d8768010fc421c457beff402c
Reviewed-on: https://webrtc-review.googlesource.com/89386
Commit-Queue: Sam Zackrisson <saza@webrtc.org>
Reviewed-by: Per Ã…hgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24066}
diff --git a/modules/audio_processing/audio_processing_unittest.cc b/modules/audio_processing/audio_processing_unittest.cc
index 4b244fc..3b7c930 100644
--- a/modules/audio_processing/audio_processing_unittest.cc
+++ b/modules/audio_processing/audio_processing_unittest.cc
@@ -176,23 +176,24 @@
 }
 
 void EnableAllAPComponents(AudioProcessing* ap) {
+  AudioProcessing::Config apm_config;
 #if defined(WEBRTC_AUDIOPROC_FIXED_PROFILE)
-  EXPECT_NOERR(ap->echo_control_mobile()->Enable(true));
+  apm_config.echo_cancellation.enabled = true;
+  apm_config.echo_cancellation.mobile_mode = true;
 
   EXPECT_NOERR(ap->gain_control()->set_mode(GainControl::kAdaptiveDigital));
   EXPECT_NOERR(ap->gain_control()->Enable(true));
 #elif defined(WEBRTC_AUDIOPROC_FLOAT_PROFILE)
+  apm_config.echo_cancellation.enabled = true;
+  apm_config.echo_cancellation.mobile_mode = false;
   EXPECT_NOERR(ap->echo_cancellation()->enable_drift_compensation(true));
   EXPECT_NOERR(ap->echo_cancellation()->enable_metrics(true));
   EXPECT_NOERR(ap->echo_cancellation()->enable_delay_logging(true));
-  EXPECT_NOERR(ap->echo_cancellation()->Enable(true));
 
   EXPECT_NOERR(ap->gain_control()->set_mode(GainControl::kAdaptiveAnalog));
   EXPECT_NOERR(ap->gain_control()->set_analog_level_limits(0, 255));
   EXPECT_NOERR(ap->gain_control()->Enable(true));
 #endif
-
-  AudioProcessing::Config apm_config;
   apm_config.high_pass_filter.enabled = true;
   ap->ApplyConfig(apm_config);