Remove kEnablePrintPreview now that the pdf plugin is part of Chromium.

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 335 matching lines @@
                                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,
-#if defined(GOOGLE_CHROME_BUILD)
       false,
-#else
-      true,
-#endif
       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(),
@@ skipping 986 matching lines @@
 PrefProxyConfigTracker* ProfileImpl::CreateProxyConfigTracker() {
 #if defined(OS_CHROMEOS)
   if (chromeos::ProfileHelper::IsSigninProfile(this)) {
     return ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
         g_browser_process->local_state());
   }
 #endif  // defined(OS_CHROMEOS)
   return ProxyServiceFactory::CreatePrefProxyConfigTrackerOfProfile(
       GetPrefs(), g_browser_process->local_state());
 }