Make IPC::Channel::Listener:OnMessageReceived have a return value indicating ...

chrome/browser/utility_process_host.h

 // Copyright (c) 2010 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_BROWSER_UTILITY_PROCESS_HOST_H_
 #define CHROME_BROWSER_UTILITY_PROCESS_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 79 matching lines @@
     virtual void OnIDBKeysFromValuesAndKeyPathFailed(int id) {}
 
    protected:
     friend class base::RefCountedThreadSafe<Client>;
 
     virtual ~Client() {}
 
    private:
     friend class UtilityProcessHost;
 
-    void OnMessageReceived(const IPC::Message& message);
+    bool OnMessageReceived(const IPC::Message& message);
 
     DISALLOW_COPY_AND_ASSIGN(Client);
   };
 
   UtilityProcessHost(ResourceDispatcherHost* rdh, Client* client,
                      BrowserThread::ID client_thread_id);
   virtual ~UtilityProcessHost();
 
   // Start a process to unpack the extension at the given path.  The process
   // will be given access to the directory subtree that the extension file is
@@ skipping 31 matching lines @@
  protected:
   // Allow these methods to be overridden for tests.
   virtual FilePath GetUtilityProcessCmd();
 
  private:
   // Starts a process if necessary.  Returns true if it succeeded or a process
   // has already been started via StartBatchMode().
   bool StartProcess(const FilePath& exposed_dir);
 
   // IPC messages:
-  virtual void OnMessageReceived(const IPC::Message& message);
+  virtual bool OnMessageReceived(const IPC::Message& message);
 
   // BrowserChildProcessHost:
   virtual void OnProcessCrashed(int exit_code);
   virtual bool CanShutdown();
 
   // A pointer to our client interface, who will be informed of progress.
   scoped_refptr<Client> client_;
   BrowserThread::ID client_thread_id_;
   // True when running in batch mode, i.e., StartBatchMode() has been called
   // and the utility process will run until EndBatchMode().
   bool is_batch_mode_;
 
   DISALLOW_COPY_AND_ASSIGN(UtilityProcessHost);
 };
 
 #endif  // CHROME_BROWSER_UTILITY_PROCESS_HOST_H_