include: Add AudioProcessing enum in windows.media.idl.

include/windows.media.idl

@@ -25,6 +25,8 @@ import "windows.foundation.idl";
 
 namespace Windows.Media
 {
+    typedef enum AudioProcessing AudioProcessing;
+
     interface IMediaControl;
     interface IMediaMarker;
 
@@ -37,6 +39,15 @@ namespace Windows.Media
     }
 
     [
+        contract(Windows.Foundation.UniversalApiContract, 1.0)
+    ]
+    enum AudioProcessing
+    {
+        Default = 0,
+        Raw     = 1,
+    };
+
+    [
         contract(Windows.Foundation.UniversalApiContract, 1.0),
         uuid(1803def8-dca5-4b6f-9c20-e3d3c0643625)
     ]