Give classes with virtual methods virtual protected destructors instead of implicit non-virtual public destructors.

Was originally:
Replace public nonvirtual destructors in classes with virtual members
with protected nonvirtual destructors where possible, and with
public virtual destructors where destruction of a derived class occurs.
(Excluding chrome/browser/...)

(Part 4 of http://www.gotw.ca/publications/mill18.htm
has a rationale for why public nonvirtual destructors in classes with
virtual members is dangerous.)

Patch by: Jacob Mandelson (jlmjln@gmail.com)
BUG=none
TEST=base_unittests & app_unittests

Review URL: http://codereview.chromium.org/200106

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@34633 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 4 insertions, 1 deletions

diff --git a/ipc/ipc_logging.h b/ipc/ipc_logging.h
index ad0559b..271b2a1 100644
--- a/ipc/ipc_logging.h
+++ b/ipc/ipc_logging.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009 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.
 
@@ -29,6 +29,9 @@ class Logging {
   class Consumer {
    public:
     virtual void Log(const LogData& data) = 0;
+
+   protected:
+    virtual ~Consumer() {}
   };
 
   void SetConsumer(Consumer* consumer);