ANR due to long running binder transaction on main thread due to volume change by user

[Arthas26]

As the title suggests, i have seen these anr in one of my apps.
The ContentObserver can be easily configured to have a non ui handler thread so that binder transaction in onChange can offloaded to a non ui thread.

Also if this is not the right place to report this issues , pls point me in the right direction.

Stack Trace

main (native):tid=1 systid=8472 
#00 pc 0x4b38c libc.so (syscall + 28)
#01 pc 0x1af92c libart.so (art::ConditionVariable::WaitHoldingLocks(art::Thread*) + 148)
#02 pc 0x66b4b4 libart.so (art::GoToRunnable(art::Thread*) + 460)
#03 pc 0x66b2a4 libart.so (art::JniMethodEnd(unsigned int, art::Thread*) + 28)
      at android.os.BinderProxy.transactNative(Native method)
      at android.os.BinderProxy.transact(BinderProxy.java:540)
      at android.media.IAudioService$Stub$Proxy.getStreamVolume(IAudioService.java:2735)
      at android.media.AudioManager.getStreamVolume(AudioManager.java:1026)
      at com.google.android.gms.ads.omid.library.devicevolume.b.a(:com.google.android.gms.policy_ads_fdr_dynamite@[email protected]:4)
      at com.google.android.gms.ads.omid.library.devicevolume.b.onChange(:com.google.android.gms.policy_ads_fdr_dynamite@[email protected]:4)
      at android.database.ContentObserver.onChange(ContentObserver.java:153)
      at android.database.ContentObserver.onChange(ContentObserver.java:169)
      at android.database.ContentObserver.onChange(ContentObserver.java:187)
      at android.database.ContentObserver.onChange(ContentObserver.java:202)
      at android.database.ContentObserver.lambda$dispatchChange$0$ContentObserver(ContentObserver.java:282)
      at android.database.-$$Lambda$ContentObserver$MgqiYb2qvgLhoXTioYXq9MvvpNk.run(lambda)
      at android.os.Handler.handleCallback(Handler.java:938)
      at android.os.Handler.dispatchMessage(Handler.java:99)
      at android.os.Looper.loop(Looper.java:250)
      at android.app.ActivityThread.main(ActivityThread.java:7806)
      at java.lang.reflect.Method.invoke(Native method)
      at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:958)