Remove the flag to disable new hotwording.

chrome/browser/search/hotword_service.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/search/hotword_service.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/i18n/case_conversion.h"
@@ skipping 277 matching lines @@
 
   for (size_t i = 0; i < arraysize(kSupportedLocales); i++) {
     if (normalized_locale == kSupportedLocales[i])
       return true;
   }
   return false;
 }
 
 // static
 bool HotwordService::IsExperimentalHotwordingEnabled() {
-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-  return !command_line->HasSwitch(switches::kDisableExperimentalHotwording);
+  return true;
 }
 
 #if defined(OS_CHROMEOS)
 class HotwordService::HotwordUserSessionStateObserver
     : public user_manager::UserManager::UserSessionStateObserver {
  public:
   explicit HotwordUserSessionStateObserver(HotwordService* service)
       : service_(service) {}
 
   // Overridden from UserSessionStateObserver:
@@ skipping 578 matching lines @@
   // Only support multiple profiles and profile switching in ChromeOS.
   if (user_manager::UserManager::IsInitialized()) {
     user_manager::User* user =
         user_manager::UserManager::Get()->GetActiveUser();
     if (user && user->is_profile_created())
       return profile_ == ProfileManager::GetActiveUserProfile();
   }
 #endif
   return true;
 }