Don't start the hotword extension on Chrome startup if the user doesn't have hotwording enabled.

chrome/browser/resources/hotword/manager.js

Index: chrome/browser/resources/hotword/manager.js
diff --git a/chrome/browser/resources/hotword/manager.js b/chrome/browser/resources/hotword/manager.js
index d186a3f424b2ef9d7dc615277487fce700c69553..54f3fcecef89d432eb2cc2c7a0ce443ed0e1d548 100644
--- a/chrome/browser/resources/hotword/manager.js
+++ b/chrome/browser/resources/hotword/manager.js
@@ -24,11 +24,6 @@
   var launcherManager = new hotword.LauncherManager(stateManager);
   var trainingManager = new hotword.TrainingManager(stateManager);
 
-  // Detect Chrome startup and make sure we get a chance to run.
-  chrome.runtime.onStartup.addListener(function() {
-    stateManager.updateStatus();
-  });
-
   // Detect when hotword settings have changed.
   chrome.hotwordPrivate.onEnabledChanged.addListener(function() {
     stateManager.updateStatus();