Update audio api to use v2 stable device ID

extensions/test/data/api_test/audio/add_nodes/background.js

Index: extensions/test/data/api_test/audio/add_nodes/background.js
diff --git a/extensions/test/data/api_test/audio/add_nodes/background.js b/extensions/test/data/api_test/audio/add_nodes/background.js
index 1acaf6639e8559ffb64080c5e80437ddadbad4f5..98e5054282ba8d822f0277cad03035ac40ede926 100644
--- a/extensions/test/data/api_test/audio/add_nodes/background.js
+++ b/extensions/test/data/api_test/audio/add_nodes/background.js
@@ -8,6 +8,7 @@ chrome.test.runTests([
       var deviceList = devices.map(function(device) {
         return {
           id: device.id,
+          stableId: device.stableId,
           stableDeviceId: device.stableDeviceId,
           isInput: device.isInput,
           deviceType: device.deviceType,
@@ -18,8 +19,12 @@ chrome.test.runTests([
         return Number.parseInt(lhs.id) - Number.parseInt(rhs.id);
       });
 
+     chrome.test.assertTrue(devices.length > 0);
+     var hasStableId = !!devices[0].stableId;
+
      chrome.test.assertEq([{
         id: '30001',
+        stableId: hasStableId ? '116606' /* 80001 ^ 0xFFFF */ : '',
         stableDeviceId: '80001',
         isInput: false,
         deviceType: 'USB',
@@ -27,6 +32,7 @@ chrome.test.runTests([
         displayName: 'Jabra Speaker 1'
       }, {
         id: '30002',
+        stableId: hasStableId ? '116605' /* 80002 ^ 0xFFFF */ : '',
         stableDeviceId: '80002',
         isInput: false,
         deviceType: 'USB',
@@ -34,6 +40,7 @@ chrome.test.runTests([
         displayName: 'Jabra Speaker 2'
       }, {
         id: '30003',
+        stableId: hasStableId ? '116604' /* 80003 ^ 0xFFFF */ : '',
         stableDeviceId: '80003',
         isInput: false,
         deviceType: 'HDMI',