Delete the old hotwording integration.

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..9898912b411bcd461567515c760745bb64195279 100644
--- a/chrome/browser/extensions/api/hotword_private/hotword_private_api.cc
+++ b/chrome/browser/extensions/api/hotword_private/hotword_private_api.cc
@@ -166,8 +166,8 @@ bool HotwordPrivateGetStatusFunction::RunSync() {
 
   PrefService* prefs = GetProfile()->GetPrefs();
   result.enabled_set = prefs->HasPrefPath(prefs::kHotwordSearchEnabled);
-  result.experimental_hotword_enabled =
-      HotwordService::IsExperimentalHotwordingEnabled();
+  // TODO(amistry): Remove this. Nothing uses it.
+  result.experimental_hotword_enabled = true;
 
   SetResult(result.ToValue().release());
   return true;
@@ -210,8 +210,7 @@ bool HotwordPrivateNotifyHotwordRecognitionFunction::RunSync() {
       hotword_service->NotifyHotwordTriggered();
     } else if (hotword_service->client()) {
       hotword_service->client()->OnHotwordRecognized(preamble);
-    } else if (HotwordService::IsExperimentalHotwordingEnabled() &&
-               hotword_service->IsAlwaysOnEnabled()) {
+    } else if (hotword_service->IsAlwaysOnEnabled()) {
       Browser* browser = GetCurrentBrowser();
       // If a Browser does not exist, fall back to the universally available,
       // but not recommended, way.