Add Now setting and migration logic.

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 1655 matching lines @@
 // Boolean that controls the enabled-state of Geolocation in content.
 const char kGeolocationEnabled[] = "geolocation.enabled";
 #endif
 
 #if defined(ENABLE_GOOGLE_NOW)
 // Boolean that is true when Google services can use the user's location.
 const char kGoogleGeolocationAccessEnabled[] =
     "googlegeolocationaccess.enabled";
 #endif
 
+// Boolean that specifies whether to enable the Google Now Launcher extension.
+// Note: This is not the notifications component gated by ENABLE_GOOGLE_NOW.
+const char kGoogleNowLauncherEnabled[] = "google_now_launcher.enabled";
+
 // The default audio capture device used by the Media content setting.
 const char kDefaultAudioCaptureDevice[] = "media.default_audio_capture_device";
 
 // The default video capture device used by the Media content setting.
 const char kDefaultVideoCaptureDevice[] = "media.default_video_capture_Device";
 
 // The salt used for creating random MediaSource IDs.
 const char kMediaDeviceIdSalt[] = "media.device_id_salt";
 
 // The last used printer and its settings.
@@ skipping 602 matching lines @@
 // (name and a list of clients that registered the whitelist).
 const char kRegisteredSupervisedUserWhitelists[] =
     "supervised_users.whitelists";
 
 #if defined(ENABLE_EXTENSIONS)
 // Policy that indicates how to handle animated images.
 const char kAnimationPolicy[] = "settings.a11y.animation_policy";
 #endif
 
 }  // namespace prefs