Remove the code to wait on disconnected child processes to get the exit code. This was done in r101…

content/browser/browser_child_process_host_impl.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_
 #define CONTENT_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_
 #pragma once
 
 #include <list>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
 #include "base/process.h"
-#include "base/synchronization/waitable_event_watcher.h"
 #include "content/browser/child_process_launcher.h"
 #include "content/public/browser/browser_child_process_host.h"
 #include "content/public/browser/child_process_data.h"
 #include "content/public/common/child_process_host_delegate.h"
 
 namespace content {
 class BrowserChildProcessHostIterator;
 }
 
 // Plugins/workers and other child processes that live on the IO thread use this
 // class. RenderProcessHostImpl is the main exception that doesn't use this
 /// class because it lives on the UI thread.
 class CONTENT_EXPORT BrowserChildProcessHostImpl :
     public content::BrowserChildProcessHost,
     public NON_EXPORTED_BASE(content::ChildProcessHostDelegate),
-    public ChildProcessLauncher::Client,
-    public base::WaitableEventWatcher::Delegate {
+    public ChildProcessLauncher::Client {
  public:
   BrowserChildProcessHostImpl(
       content::ProcessType type,
       content::BrowserChildProcessHostDelegate* delegate);
   virtual ~BrowserChildProcessHostImpl();
 
   // Terminates all child processes and deletes each BrowserChildProcessHost
   // instance.
   static void TerminateAll();
 
   // BrowserChildProcessHostImpl implementation:
   virtual bool Send(IPC::Message* message) OVERRIDE;
   virtual void Launch(
 #if defined(OS_WIN)
       const FilePath& exposed_dir,
 #elif defined(OS_POSIX)
       bool use_zygote,
       const base::EnvironmentVector& environ,
 #endif
       CommandLine* cmd_line) OVERRIDE;
   virtual const content::ChildProcessData& GetData() const OVERRIDE;
   virtual content::ChildProcessHost* GetHost() const OVERRIDE;
   virtual base::TerminationStatus GetTerminationStatus(int* exit_code) OVERRIDE;
   virtual void SetName(const string16& name) OVERRIDE;
   virtual void SetHandle(base::ProcessHandle handle) OVERRIDE;
 
-  bool disconnect_was_alive() const { return disconnect_was_alive_; }
-
   // Returns the handle of the child process. This can be called only after
   // OnProcessLaunched is called or it will be invalid and may crash.
   base::ProcessHandle GetHandle() const;
 
   // Removes this host from the host list. Calls ChildProcessHost::ForceShutdown
   void ForceShutdown();
 
   // Controls whether the child process should be terminated on browser
   // shutdown. Default is to always terminate.
   void SetTerminateChildOnShutdown(bool terminate_on_shutdown);
@@ skipping 14 matching lines @@
   // ChildProcessHostDelegate implementation:
   virtual bool CanShutdown() OVERRIDE;
   virtual void OnChildDisconnected() OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
   virtual void OnChannelError() OVERRIDE;
 
   // ChildProcessLauncher::Client implementation.
   virtual void OnProcessLaunched() OVERRIDE;
 
-  // public base::WaitableEventWatcher::Delegate implementation:
-  virtual void OnWaitableEventSignaled(
-      base::WaitableEvent* waitable_event) OVERRIDE;
-
   content::ChildProcessData data_;
   content::BrowserChildProcessHostDelegate* delegate_;
   scoped_ptr<content::ChildProcessHost> child_process_host_;
 
   scoped_ptr<ChildProcessLauncher> child_process_;
-#if defined(OS_WIN)
-  base::WaitableEventWatcher child_watcher_;
-#else
-  base::WeakPtrFactory<BrowserChildProcessHostImpl> task_factory_;
-#endif
-  bool disconnect_was_alive_;
 };
 
 #endif  // CONTENT_BROWSER_BROWSER_CHILD_PROCESS_HOST_IMPL_H_