Part 1 of repairing regressions to my old clang check plugins so Nico can

chrome/common/child_thread.h

 // 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.
 
 #ifndef CHROME_COMMON_CHILD_THREAD_H_
 #define CHROME_COMMON_CHILD_THREAD_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
@@ skipping 56 matching lines @@
 
   // Returns the one child thread.
   static ChildThread* current();
 
  protected:
   friend class ChildProcess;
 
   // Called when the process refcount is 0.
   void OnProcessFinalRelease();
 
-  virtual bool OnControlMessageReceived(const IPC::Message& msg) {
-    return false;
-  }
+  virtual bool OnControlMessageReceived(const IPC::Message& msg);
   virtual void OnAskBeforeShutdown();
   virtual void OnShutdown();
 
 #ifdef IPC_MESSAGE_LOG_ENABLED
   virtual void OnSetIPCLoggingEnabled(bool enable);
 #endif
 
   IPC::SyncChannel* channel() { return channel_.get(); }
 
   void set_on_channel_error_called(bool on_channel_error_called) {
@@ skipping 34 matching lines @@
   MessageLoop* message_loop_;
 
   scoped_ptr<NotificationService> notification_service_;
 
   scoped_ptr<FileSystemDispatcher> file_system_dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildThread);
 };
 
 #endif  // CHROME_COMMON_CHILD_THREAD_H_