Revert of Restored disable print preview policy.

chrome/browser/profiles/profile_impl.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/browser/profiles/profile_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 359 matching lines @@
   registry->RegisterStringPref(prefs::kHomePage,
                                std::string(),
                                user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
 #if defined(ENABLE_PRINTING)
   registry->RegisterBooleanPref(
       prefs::kPrintingEnabled,
       true,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 #endif
   registry->RegisterBooleanPref(
-      prefs::kPrintPreviewDisabled,
-      false,
-      user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
-  registry->RegisterBooleanPref(
       prefs::kForceEphemeralProfiles,
       false,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 
   // Initialize the cache prefs.
   registry->RegisterFilePathPref(
       prefs::kDiskCacheDir,
       base::FilePath(),
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
   registry->RegisterIntegerPref(
@@ skipping 1058 matching lines @@
       domain_reliability::DomainReliabilityServiceFactory::GetInstance()->
           GetForBrowserContext(this);
   if (!service)
     return scoped_ptr<domain_reliability::DomainReliabilityMonitor>();
 
   return service->CreateMonitor(
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO),
       local_state,
       prefs::kMetricsReportingEnabled);
 }