[Hotword] Remove unneeded preferences. Cleaning up look of settings.

chrome/common/pref_names.cc

 // Copyright (c) 2012 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/common/pref_names.h"
 
 #include "base/basictypes.h"
 #include "chrome/common/pref_font_webkit_names.h"
 
 namespace prefs {
@@ skipping 2061 matching lines @@
 // Holds URL patterns that specify URLs that will be granted access to video
 // capture devices without prompt.  NOTE: This whitelist is currently only
 // supported when running in kiosk mode.
 // TODO(tommi): Update comment when this is supported for all modes.
 const char kVideoCaptureAllowedUrls[] = "hardware.video_capture_allowed_urls";
 
 // A boolean pref that controls the enabled-state of hotword search voice
 // trigger.
 const char kHotwordSearchEnabled[] = "hotword.search_enabled";
 
-// A boolean pref that controls the enabled-state of hotword search voice
-// trigger when using incognito mode.
-const char kHotwordSearchIncognitoEnabled[] =
-    "hotword.incognito_search_enabled";
-
 // An integer pref that keeps track of how many times the opt in popup for
 // hotword void search has been shown to the user. After this pref has reached
 // the maximum number of times as defined by the HotwordService, the popup is no
 // longer shown.
 const char kHotwordOptInPopupTimesShown[] = "hotword.opt_in_popup_times_shown";
 
-// A boolean pref that controls whether hotword search voice trigger stops
-// listening after 5 minutes.
-const char kHotwordSearchTimeoutEnabled[] = "hotword.search_timeout_enabled";
-
 #if defined(OS_ANDROID)
 // Boolean that controls the global enabled-state of protected media identifier.
 const char kProtectedMediaIdentifierEnabled[] =
     "protected_media_identifier.enabled";
 #endif
 
 #if defined(OS_CHROMEOS)
 // Dictionary for transient storage of settings that should go into device
 // settings storage before owner has been assigned.
 const char kDeviceSettingsCache[] = "signed_settings_cache";
@@ skipping 519 matching lines @@
 
 // The number of seconds since epoch that the OS password was last changed.
 const char kOsPasswordLastChanged[] =
     "password_manager.os_password_last_changed";
 #endif
 
 // Whether DNS Quick Check is disabled in proxy resolution.
 const char kQuickCheckEnabled[] = "proxy.quick_check_enabled";
 
 }  // namespace prefs