Make availability of hotword hardware known to hotword component extension.

chrome/browser/extensions/api/hotword_private/hotword_private_api.cc

Index: chrome/browser/extensions/api/hotword_private/hotword_private_api.cc
diff --git a/chrome/browser/extensions/api/hotword_private/hotword_private_api.cc b/chrome/browser/extensions/api/hotword_private/hotword_private_api.cc
index 2c37752ce7d2036b53845b96d79468f53fd9dfff..2bfe0795ac92d4939c2ea8850a46c017c3f5f10f 100644
--- a/chrome/browser/extensions/api/hotword_private/hotword_private_api.cc
+++ b/chrome/browser/extensions/api/hotword_private/hotword_private_api.cc
@@ -155,6 +155,7 @@ bool HotwordPrivateGetStatusFunction::RunSync() {
     result.audio_logging_enabled = false;
     result.always_on_enabled = false;
     result.user_is_active = false;
+    result.hotword_stream_available = false;
   } else {
     result.available = hotword_service->IsServiceAvailable();
     result.enabled = hotword_service->IsSometimesOnEnabled();
@@ -162,6 +163,8 @@ bool HotwordPrivateGetStatusFunction::RunSync() {
     result.training_enabled = hotword_service->IsTraining();
     result.always_on_enabled = hotword_service->IsAlwaysOnEnabled();
     result.user_is_active = hotword_service->UserIsActive();
+    result.hotword_stream_available =
+        HotwordService::IsHotwordHardwareAvailable();
   }
 
   PrefService* prefs = GetProfile()->GetPrefs();