Hotword Private API: Add function and event to query the existence of a speaker model

chrome/common/extensions/api/hotword_private.idl

Index: chrome/common/extensions/api/hotword_private.idl
diff --git a/chrome/common/extensions/api/hotword_private.idl b/chrome/common/extensions/api/hotword_private.idl
index 3607c4985eef668c4c2911fbdcf9f48841c5745b..6bc476739b956d8e4f578ce560dc84fed27ee53f 100644
--- a/chrome/common/extensions/api/hotword_private.idl
+++ b/chrome/common/extensions/api/hotword_private.idl
@@ -142,6 +142,10 @@ namespace hotwordPrivate {
 
     // Gets the audio history opt-in state.
     static void getAudioHistoryEnabled(optional AudioHistoryCallback callback);
+
+    // Gets the audio history opt-in state.

[benwells, 2015/03/20 07:01:39]

I think you're comment needs updating...

[kcarattini, 2015/03/20 07:23:59]

Done.

+    static void speakerModelExistsResult(boolean exists,
+                                         optional GenericDoneCallback callback);
   };
 
   interface Events {
@@ -167,5 +171,8 @@ namespace hotwordPrivate {
 
     // Fired when the speaker model should be deleted.
     static void onDeleteSpeakerModel();
+
+    // Fired when there is a request for whether the speaker model exists.

[benwells, 2015/03/20 07:01:38]

I'd update this comment to be clearer, like 'fired when the browser wants to
find out if the spearker model exists'.

[kcarattini, 2015/03/20 07:24:00]

Done.

+    static void onSpeakerModelExists();
   };
 };