MD Settings: Add Hotword (OK Google) section to search_page

chrome/browser/extensions/api/settings_private/prefs_util.cc

 // Copyright 2015 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/extensions/api/settings_private/prefs_util.h"
 
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/browser/extensions/settings_api_helpers.h"
@@ skipping 315 matching lines @@
   (*s_whitelist)[::prefs::kImportBookmarks] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)[::prefs::kImportHistory] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)[::prefs::kImportSavedPasswords] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
   (*s_whitelist)[::prefs::kImportSearchEngine] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
 #endif
 
+  // Search settings.
+  (*s_whitelist)[::prefs::kHotwordSearchEnabled] =
+      settings_private::PrefType::PREF_TYPE_BOOLEAN;
+  (*s_whitelist)[::prefs::kHotwordAlwaysOnSearchEnabled] =
+      settings_private::PrefType::PREF_TYPE_BOOLEAN;
+
   // Proxy settings.
   (*s_whitelist)[proxy_config::prefs::kProxy] =
       settings_private::PrefType::PREF_TYPE_DICTIONARY;
 
 #if defined(GOOGLE_CHROME_BUILD)
   (*s_whitelist)[::prefs::kMediaRouterEnableCloudServices] =
       settings_private::PrefType::PREF_TYPE_BOOLEAN;
 #endif  // defined(GOOGLE_CHROME_BUILD)
 
   return *s_whitelist;
@@ skipping 369 matching lines @@
   if (pref_object.key == ::prefs::kDefaultSearchProviderEnabled)
     return GetExtensionOverridingSearchEngine(profile_);
 
   if (pref_object.key == proxy_config::prefs::kProxy)
     return GetExtensionOverridingProxy(profile_);
 
   return nullptr;
 }
 
 }  // namespace extensions