Gracefully handle child process death in out-of-process plugin loading.

content/browser/plugin_service.h

 // Copyright (c) 2011 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.
 
 // This class responds to requests from renderers for the list of plugins, and
 // also a proxy object for plugin instances.
 
 #ifndef CONTENT_BROWSER_PLUGIN_SERVICE_H_
 #define CONTENT_BROWSER_PLUGIN_SERVICE_H_
 #pragma once
@@ skipping 19 matching lines @@
 #include "base/memory/scoped_ptr.h"
 #include "base/win/registry.h"
 #endif
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 #include "base/files/file_path_watcher.h"
 #endif
 
 struct PepperPluginInfo;
 class PluginDirWatcherDelegate;
+class PluginLoaderPosix;
 
 namespace base {
 class MessageLoopProxy;
 }
 
 namespace content {
 class BrowserContext;
 class ResourceContext;
 class PluginServiceFilter;
 struct PluginServiceFilterParams;
@@ skipping 200 matching lines @@
   scoped_refptr<PluginDirWatcherDelegate> file_watcher_delegate_;
 #endif
 
   std::vector<PepperPluginInfo> ppapi_plugins_;
 
   // Weak pointer; outlives us.
   content::PluginServiceFilter* filter_;
 
   std::set<PluginProcessHost::Client*> pending_plugin_clients_;
 
+#if defined(OS_POSIX)
+  scoped_refptr<PluginLoaderPosix> plugin_loader_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(PluginService);
 };
 
 DISABLE_RUNNABLE_METHOD_REFCOUNT(PluginService);
 
 #endif  // CONTENT_BROWSER_PLUGIN_SERVICE_H_