Adds support for detection of pro-audio support on Android

webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioUtils.java

Index: webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioUtils.java
diff --git a/webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioUtils.java b/webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioUtils.java
index 579482e14b88d27ef285a37b73cf378e9fd53851..fecefc75c3c3736494d16543854d0085a4d49806 100644
--- a/webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioUtils.java
+++ b/webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioUtils.java
@@ -169,11 +169,10 @@ public final class WebRtcAudioUtils {
     return Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
   }
 
-  // TODO(phoglund): enable when all downstream users use M.
-  // public static boolean runningOnMOrHigher() {
+  public static boolean runningOnMarshmallowOrHigher() {
     // API Level 23.
-    // return Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
-  //}
+    return Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
+  }
 
   // Helper method for building a string of thread information.
   public static String getThreadInfo() {