Revert "Fix a ton of compiler warnings."

ipc/ipc_sync_message.h

Index: ipc/ipc_sync_message.h
diff --git a/ipc/ipc_sync_message.h b/ipc/ipc_sync_message.h
index 092fda2b6beef4bd17979809780efbfd083c3e14..5d072a7561ff74ae95694e78c3775e76b90987a6 100644
--- a/ipc/ipc_sync_message.h
+++ b/ipc/ipc_sync_message.h
@@ -1,9 +1,9 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 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 IPC_IPC_SYNC_MESSAGE_H_
-#define IPC_IPC_SYNC_MESSAGE_H_
+#ifndef IPC_IPC_SYNC_MESSAGE_H__
+#define IPC_IPC_SYNC_MESSAGE_H__
 
 #if defined(OS_WIN)
 #include <windows.h>
@@ -84,7 +84,6 @@ class SyncMessage : public Message {
 // Used to deserialize parameters from a reply to a synchronous message
 class MessageReplyDeserializer {
  public:
-  virtual ~MessageReplyDeserializer() {}
   bool SerializeOutputParameters(const Message& msg);
  private:
   // Derived classes need to implement this, using the given iterator (which
@@ -94,4 +93,4 @@ class MessageReplyDeserializer {
 
 }  // namespace IPC
 
-#endif  // IPC_IPC_SYNC_MESSAGE_H_
+#endif  // IPC_IPC_SYNC_MESSAGE_H__