Remove remainder of USE_ATHENA ifdefs

chrome/browser/sessions/session_data_deleter.cc

 // Copyright 2013 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 "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/prefs/session_startup_pref.h"
 #include "chrome/browser/profiles/profile_io_data.h"
@@ skipping 130 matching lines @@
 
 }  // namespace
 
 void DeleteSessionOnlyData(Profile* profile) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   if (browser_shutdown::IsTryingToQuit())
     return;
 
   // TODO: Remove Athena special casing once the AthenaSessionRestore is in
   // place.
-#if defined(OS_ANDROID) || defined(USE_ATHENA)
+#if defined(OS_ANDROID)
   SessionStartupPref::Type startup_pref_type =
       SessionStartupPref::GetDefaultStartupType();
 #else
   SessionStartupPref::Type startup_pref_type =
       StartupBrowserCreator::GetSessionStartupPref(
           *base::CommandLine::ForCurrentProcess(), profile).type;
 #endif
 
   scoped_refptr<SessionDataDeleter> deleter(
       new SessionDataDeleter(profile->GetSpecialStoragePolicy(),
                              startup_pref_type == SessionStartupPref::LAST));
   deleter->Run(
       Profile::GetDefaultStoragePartition(profile),
       ProfileIOData::FromResourceContext(profile->GetResourceContext()));
 }