Bug 993275 - [Bluedroid] Ensure icon for audio service devices, r=echou

dom/bluetooth/bluedroid/BluetoothServiceBluedroid.cpp

@@ -205,7 +205,22 @@ ClassToIcon(uint32_t aClass, nsAString& aRetIcon)
       }
       break;
   }
+
+  if (aRetIcon.IsEmpty()) {
+    if (HAS_AUDIO(aClass)) {
+      /**
+       * Property 'Icon' may be missed due to CoD of major class is TOY(0x08).
+       * But we need to assign Icon as audio-card if service class is 'Audio'.
+       * This is for PTS test case TC_AG_COD_BV_02_I. As HFP specification
+       * defines that service class is 'Audio' can be considered as HFP HF.
+       */
+      aRetIcon.AssignLiteral("audio-card");
+    } else {
+      BT_LOGR("No icon to match class: %x", aClass);
+    }
+  }
 }
+
 static ControlPlayStatus
 PlayStatusStringToControlPlayStatus(const nsAString& aPlayStatus)
 {