Remove experimental sync promo layouts

chrome/browser/ui/webui/sync_promo/sync_promo_trial.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_SYNC_PROMO_SYNC_PROMO_TRIAL_H_
 #define CHROME_BROWSER_UI_WEBUI_SYNC_PROMO_SYNC_PROMO_TRIAL_H_
 
 #include "base/basictypes.h"
 #include "chrome/browser/ui/webui/sync_promo/sync_promo_ui.h"
 
 class Profile;
 namespace content {
 class WebUI;
 }
 
 namespace sync_promo_trial {
 
-enum StartupOverride {
-  STARTUP_OVERRIDE_NONE,
-  STARTUP_OVERRIDE_SHOW,
-  STARTUP_OVERRIDE_HIDE,
-};
-
-// Activate the field trial.
-void Activate();
-
-// Returns the start up override value for any currently running sync promo
-// trials.
-StartupOverride GetStartupOverrideForCurrentTrial();
-
 // Records that the user was shown the sync promo for any currently running sync
 // promo trials. |web_ui| is the web UI where the promo was shown.
 void RecordUserShownPromo(content::WebUI* web_ui);
 
-// Records that the sync promo was not shown to the user (when it normally
-// would have been shown) because of the current trial.
-void RecordSyncPromoSuppressedForCurrentTrial();
-
 // Records that the user signed into sync for any currently running sync promo
 // trials. |web_ui| is the web UI where the user signed into sync.
 void RecordUserSignedIn(content::WebUI* web_ui);
 
-// Returns true if a sync promo trial is running that overrides the sync promo
-// version. If such a trial is running then on return |version| will contain the
-// version of the sync promo to show. |version| must not be NULL.
-bool GetSyncPromoVersionForCurrentTrial(SyncPromoUI::Version* version);
-
 }  // namespace sync_promo_trial
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SYNC_PROMO_SYNC_PROMO_TRIAL_H_