Reverts debugging code added in hopes of tracking crash. This also

chrome/browser/prefs/incognito_user_pref_store.cc

 // Copyright (c) 2011 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/prefs/incognito_user_pref_store.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "chrome/common/pref_names.h"
 
@@ skipping 116 matching lines @@
 
 void IncognitoUserPrefStore::CommitPendingWrite() {
   underlay_->CommitPendingWrite();
   // We do not write our content intentionally.
 }
 
 void IncognitoUserPrefStore::ReportValueChanged(const std::string& key) {
   FOR_EACH_OBSERVER(PrefStore::Observer, observers_, OnPrefValueChanged(key));
 }
 
-void IncognitoUserPrefStore::CheckIfValueDestroyed(const std::string& key) {
-}
-
 void IncognitoUserPrefStore::OnPrefValueChanged(const std::string& key) {
   if (!overlay_.GetValue(key, NULL))
     ReportValueChanged(key);
 }
 
 void IncognitoUserPrefStore::OnInitializationCompleted(bool succeeded) {
   FOR_EACH_OBSERVER(PrefStore::Observer, observers_,
                     OnInitializationCompleted(succeeded));
 }
 
 bool IncognitoUserPrefStore::ShallBeStoredInOverlay(
     const std::string& key) const {
   // List of keys that cannot be changed in the user prefs file by the incognito
   // profile:
   return key == prefs::kBrowserWindowPlacement;
 }