Hotword Audio Verification App: Fix window handling.

chrome/browser/resources/hotword_audio_verification/flow.js

Index: chrome/browser/resources/hotword_audio_verification/flow.js
diff --git a/chrome/browser/resources/hotword_audio_verification/flow.js b/chrome/browser/resources/hotword_audio_verification/flow.js
index 635456a06650e4a47640fa85cbcd4ad929572492..0ba06570fc18082d004a9d50ba5b00f7c3f9e6cd 100644
--- a/chrome/browser/resources/hotword_audio_verification/flow.js
+++ b/chrome/browser/resources/hotword_audio_verification/flow.js
@@ -73,6 +73,8 @@
    */
   Flow.prototype.showStep_ = function() {
     var currentStep = this.currentFlow_[this.currentStepIndex_];
+    document.getElementById(currentStep).hidden = false;
+
     var previousStep = null;
     if (this.currentStepIndex_ > 0)
       previousStep = this.currentFlow_[this.currentStepIndex_ - 1];
@@ -80,7 +82,7 @@
     if (previousStep)
       document.getElementById(previousStep).hidden = true;
 
-    document.getElementById(currentStep).hidden = false;
+    chrome.app.window.current().show();
   };
 
   window.Flow = Flow;