Virtual destructors should have virtual keyword.

chrome/test/live_sync/live_autofill_sync_test.h

 // 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.
 
 #ifndef CHROME_TEST_LIVE_SYNC_LIVE_AUTOFILL_SYNC_TEST_H_
 #define CHROME_TEST_LIVE_SYNC_LIVE_AUTOFILL_SYNC_TEST_H_
 #pragma once
 
 #include <set>
 #include <vector>
@@ skipping 69 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LiveAutofillSyncTest);
 };
 
 AutofillProfile CreateAutofillProfile(LiveAutofillSyncTest::ProfileType type);
 
 class TwoClientLiveAutofillSyncTest : public LiveAutofillSyncTest {
  public:
   TwoClientLiveAutofillSyncTest() : LiveAutofillSyncTest(TWO_CLIENT) {}
-  ~TwoClientLiveAutofillSyncTest() {}
+  virtual ~TwoClientLiveAutofillSyncTest() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TwoClientLiveAutofillSyncTest);
 };
 
 #endif  // CHROME_TEST_LIVE_SYNC_LIVE_AUTOFILL_SYNC_TEST_H_