Added automatic update for plugins based on watching file changes.

chrome/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 CHROME_BROWSER_PLUGIN_SERVICE_H_
 #define CHROME_BROWSER_PLUGIN_SERVICE_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/hash_tables.h"
+#include "base/scoped_vector.h"
 #include "base/singleton.h"
 #include "base/synchronization/waitable_event_watcher.h"
 #include "build/build_config.h"
 #include "chrome/browser/plugin_process_host.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 #include "googleurl/src/gurl.h"
 #include "ipc/ipc_channel_handle.h"
 
 #if defined(OS_WIN)
 #include "base/scoped_ptr.h"
 #include "base/win/registry.h"
 #endif
 
+#if defined(OS_LINUX)
+#include "chrome/browser/file_path_watcher/file_path_watcher.h"
+#endif
+
 #if defined(OS_CHROMEOS)
 namespace chromeos {
 class PluginSelectionPolicy;
 }
 #endif
 
 namespace IPC {
 class Message;
 }
 
 class MessageLoop;
 class Profile;
+class PluginDirWatcherDelegate;
 class ResourceDispatcherHost;
 
 namespace net {
 class URLRequestContext;
 }  // namespace net
 
 namespace webkit {
 namespace npapi {
 struct WebPluginInfo;
 }
@@ skipping 84 matching lines @@
       const GURL& url,
       const std::string& mime_type,
       PluginProcessHost::Client* client);
 
   // Helper so we can finish opening the channel after looking up the
   // plugin.
   void FinishOpenChannelToPlugin(
       const FilePath& plugin_path,
       PluginProcessHost::Client* client);
 
+#if defined(OS_LINUX)
+  // Registers a new FilePathWatcher for a given path.
+  static void RegisterFilePathWatcher(
+      FilePathWatcher* watcher,
+      const FilePath& path,
+      FilePathWatcher::Delegate* delegate);
+#endif
+
   // mapping between plugin path and PluginProcessHost
   typedef base::hash_map<FilePath, PluginProcessHost*> PluginMap;
   PluginMap plugin_hosts_;
 
   // The main thread's message loop.
   MessageLoop* main_message_loop_;
 
   // The IO thread's resource dispatcher host.
   ResourceDispatcherHost* resource_dispatcher_host_;
 
@@ skipping 17 matching lines @@
 #if defined(OS_WIN)
   // Registry keys for getting notifications when new plugins are installed.
   base::win::RegKey hkcu_key_;
   base::win::RegKey hklm_key_;
   scoped_ptr<base::WaitableEvent> hkcu_event_;
   scoped_ptr<base::WaitableEvent> hklm_event_;
   base::WaitableEventWatcher hkcu_watcher_;
   base::WaitableEventWatcher hklm_watcher_;
 #endif
 
+#if defined(OS_LINUX)
+  ScopedVector<FilePathWatcher> file_watchers_;
+  scoped_refptr<PluginDirWatcherDelegate> file_watcher_delegate_;
+#endif
+
   // Set to true if chrome plugins are enabled. Defaults to true.
   static bool enable_chrome_plugins_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginService);
 };
 
 DISABLE_RUNNABLE_METHOD_REFCOUNT(PluginService);
 
 #endif  // CHROME_BROWSER_PLUGIN_SERVICE_H_