When clearing plugin data at shutdown, wait for it to finish.

chrome/browser/plugin_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_PLUGIN_PROCESS_HOST_H_
 #define CHROME_BROWSER_PLUGIN_PROCESS_HOST_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 30 matching lines @@
 class PluginProcessHost : public BrowserChildProcessHost,
                           public ResolveProxyMsgHelper::Delegate {
  public:
   class Client {
    public:
     // Returns a opaque unique identifier for the process requesting
     // the channel.
     virtual int ID() = 0;
     virtual bool OffTheRecord() = 0;
     virtual void SetPluginInfo(const webkit::npapi::WebPluginInfo& info) = 0;
+    // Called when we we have found the plugin process.
+    virtual void OnPluginProcessFound(PluginProcessHost* host) { }
     // The client should delete itself when one of these methods is called.
     virtual void OnChannelOpened(const IPC::ChannelHandle& handle) = 0;
     virtual void OnError() = 0;
 
    protected:
     virtual ~Client() {}
   };
 
   PluginProcessHost();
   virtual ~PluginProcessHost();
 
   // Initialize the new plugin process, returning true on success. This must
   // be called before the object can be used.
-  bool Init(const webkit::npapi::WebPluginInfo& info, const std::string& locale);
+  bool Init(const webkit::npapi::WebPluginInfo& info,
+            const std::string& locale);
 
   // Force the plugin process to shutdown (cleanly).
   virtual void ForceShutdown();
 
   virtual bool OnMessageReceived(const IPC::Message& msg);
   virtual void OnChannelConnected(int32 peer_pid);
   virtual void OnChannelError();
 
   // ResolveProxyMsgHelper::Delegate implementation:
   virtual void OnResolveProxyCompleted(IPC::Message* reply_msg,
@@ skipping 93 matching lines @@
   // Tracks modal windows currently visible.
   std::set<uint32> plugin_modal_windows_set_;
   // Tracks the current visibility of the cursor.
   bool plugin_cursor_visible_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(PluginProcessHost);
 };
 
 #endif  // CHROME_BROWSER_PLUGIN_PROCESS_HOST_H_