This adds a plugin selection policy for selecting allowed plugins

chrome/browser/plugin_service.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.
 
 // 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/singleton.h"
 #include "base/waitable_event_watcher.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 #include "googleurl/src/gurl.h"
 
 #if defined(OS_WIN)
 #include "base/registry.h"
 #include "base/scoped_ptr.h"
 #endif
 
+#if defined(OS_CHROMEOS)
+namespace chromeos {
+class PluginSelectionPolicy;
+}
+#endif
+
 namespace IPC {
 class Message;
 }
 
 class MessageLoop;
 class PluginProcessHost;
 class Profile;
-class URLRequestContext;
 class ResourceDispatcherHost;
 class ResourceMessageFilter;
+class URLRequestContext;
+struct WebPluginInfo;
 
 // This must be created on the main thread but it's only called on the IO/file
 // thread.
 class PluginService
     : public base::WaitableEventWatcher::Delegate,
       public NotificationObserver {
  public:
   // Initializes the global instance; should be called on startup from the main
   // thread.
   static void InitGlobalInstance(Profile* profile);
@@ skipping 23 matching lines @@
   // 'plugin_path' if needed. If the process fails to start, the return value
   // is NULL. Must be called on the IO thread.
   PluginProcessHost* FindOrStartPluginProcess(const FilePath& plugin_path);
 
   // Opens a channel to a plugin process for the given mime type, starting
   // a new plugin process if necessary.  This must be called on the IO thread
   // or else a deadlock can occur.
   void OpenChannelToPlugin(ResourceMessageFilter* renderer_msg_filter,
                            const GURL& url,
                            const std::string& mime_type,
-                           const std::string& locale,
                            IPC::Message* reply_msg);
 
+  // Gets the first allowed plugin in the list of plugins that matches
+  // the given url and mime type.  Must be called on the FILE thread.
+  bool GetFirstAllowedPluginInfo(const GURL& url,
+                                 const std::string& mime_type,
+                                 WebPluginInfo* info,
+                                 std::string* actual_mime_type);
+
   // Returns true if the given plugin is allowed to be used by a page with
   // the given URL.
   bool PrivatePluginAllowedForURL(const FilePath& plugin_path, const GURL& url);
 
   // The UI thread's message loop
   MessageLoop* main_message_loop() { return main_message_loop_; }
 
   ResourceDispatcherHost* resource_dispatcher_host() const {
     return resource_dispatcher_host_;
   }
@@ skipping 10 matching lines @@
 
   // base::WaitableEventWatcher::Delegate implementation.
   virtual void OnWaitableEventSignaled(base::WaitableEvent* waitable_event);
 
   // NotificationObserver implementation
   virtual void Observe(NotificationType type, const NotificationSource& source,
                        const NotificationDetails& details);
 
   void RegisterPepperPlugins();
 
+  // Helper so we can do the plugin lookup on the FILE thread.
+  void GetAllowedPluginForOpenChannelToPlugin(
+      ResourceMessageFilter* renderer_msg_filter,
+      const GURL& url,
+      const std::string& mime_type,
+      IPC::Message* reply_msg);
+
+  // Helper so we can finish opening the channel after looking up the
+  // plugin.
+  void FinishOpenChannelToPlugin(
+      ResourceMessageFilter* renderer_msg_filter,
+      const std::string& mime_type,
+      const FilePath& plugin_path,
+      IPC::Message* reply_msg);
+
   // 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_;
 
   // The data directory that Chrome plugins should use to store persistent data.
   FilePath chrome_plugin_data_dir_;
 
   // The browser's UI locale.
   const std::string ui_locale_;
 
   // Map of plugin paths to the origin they are restricted to.  Used for
   // extension-only plugins.
   typedef base::hash_map<FilePath, GURL> PrivatePluginMap;
   PrivatePluginMap private_plugins_;
 
   NotificationRegistrar registrar_;
 
+#if defined(OS_CHROMEOS)
+  scoped_refptr<chromeos::PluginSelectionPolicy> plugin_selection_policy_;
+#endif
+
 #if defined(OS_WIN)
   // Registry keys for getting notifications when new plugins are installed.
   RegKey hkcu_key_;
   RegKey hklm_key_;
   scoped_ptr<base::WaitableEvent> hkcu_event_;
   scoped_ptr<base::WaitableEvent> hklm_event_;
   base::WaitableEventWatcher hkcu_watcher_;
   base::WaitableEventWatcher hklm_watcher_;
 #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_