Decouple the configuration from the AudioPolicyManager

Promote AudioPolicyConfig to a full class, not just a "view"
on the APM data. This allows separating initialization of
the APM config from the initialization of the APM itself.
Thus, the APM receives a fully initialized config upon
its creation, regardless of the way the config data has been
obtained.

Bug: 205884982
Test: atest audiopolicy_tests
Test: atest audiosystem_tests
Test: atest audio_health_tests
Test: m audiopolicy_fuzzer
(cherry picked from https://android-review.googlesource.com/q/commit:b0fbc1b40ddebb274b7a0bea811440507c357d82)
Merged-In: I334d16e762499a0292540e6abae4e177480d6235
Change-Id: I334d16e762499a0292540e6abae4e177480d6235
diff --git a/services/audiopolicy/service/AudioPolicyService.cpp b/services/audiopolicy/service/AudioPolicyService.cpp
index e5b1c91..7757f37 100644
--- a/services/audiopolicy/service/AudioPolicyService.cpp
+++ b/services/audiopolicy/service/AudioPolicyService.cpp
@@ -46,6 +46,7 @@
 
 #include <system/audio.h>
 #include <system/audio_policy.h>
+#include <AudioPolicyConfig.h>
 #include <AudioPolicyManager.h>
 
 namespace android {
@@ -185,7 +186,8 @@
 
 static AudioPolicyInterface* createAudioPolicyManager(AudioPolicyClientInterface *clientInterface)
 {
-    AudioPolicyManager *apm = new AudioPolicyManager(clientInterface);
+    AudioPolicyManager *apm = new AudioPolicyManager(
+            AudioPolicyConfig::loadFromApmXmlConfigWithFallback(), clientInterface);
     status_t status = apm->initialize();
     if (status != NO_ERROR) {
         delete apm;