Add ManagedModeURLFilter.

chrome/browser/managed_mode.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 CHROME_BROWSER_MANAGED_MODE_H_
 #define CHROME_BROWSER_MANAGED_MODE_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "chrome/browser/extensions/management_policy.h"
 #include "chrome/browser/ui/browser_list_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class Browser;
 template<typename T>
 struct DefaultSingletonTraits;
+class ManagedModeURLFilter;
 class PrefService;
 class Profile;
 
 // Managed mode allows one person to manage the Chrome experience for another
 // person by pre-configuring and then locking a managed User profile.
 // The ManagedMode class provides methods to check whether the browser is in
 // managed mode, and to attempt to enter or leave managed mode.
+// Except where otherwise noted, this class should be used on the UI thread.
 class ManagedMode : public chrome::BrowserListObserver,
                     public extensions::ManagementPolicy::Provider,
                     public content::NotificationObserver {
  public:
   typedef base::Callback<void(bool)> EnterCallback;
 
   static void RegisterPrefs(PrefService* prefs);
 
   // Initializes the singleton, setting the managed_profile_. Must be called
   // after g_browser_process and the LocalState have been created.
   static void Init(Profile* profile);
   static bool IsInManagedMode();
 
   // Calls |callback| with the argument true iff managed mode was entered
   // sucessfully.
   static void EnterManagedMode(Profile* profile, const EnterCallback& callback);
   static void LeaveManagedMode();
 
+  // Returns the URL filter. This method should only be called on the IO thread.
+  static const ManagedModeURLFilter* GetURLFilter();
+
   // ExtensionManagementPolicy::Provider implementation:
   virtual std::string GetDebugPolicyProviderName() const OVERRIDE;
   virtual bool UserMayLoad(const extensions::Extension* extension,
                            string16* error) const OVERRIDE;
   virtual bool UserMayModifySettings(const extensions::Extension* extension,
                                      string16* error) const OVERRIDE;
 
   // chrome::BrowserListObserver implementation:
   virtual void OnBrowserAdded(Browser* browser) OVERRIDE;
   virtual void OnBrowserRemoved(Browser* browser) OVERRIDE;
 
   // content::NotificationObserver implementation:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
  protected:
   ManagedMode();
   virtual ~ManagedMode();
   void EnterManagedModeImpl(Profile* profile, const EnterCallback& callback);
 
   // The managed profile. This is NULL iff we are not in managed mode.
   Profile* managed_profile_;
 
  private:
+  class URLFilterContext;
+
+  friend class Singleton<ManagedMode, LeakySingletonTraits<ManagedMode> >;
   friend struct DefaultSingletonTraits<ManagedMode>;
-  friend class Singleton<ManagedMode>;
   FRIEND_TEST_ALL_PREFIXES(ExtensionApiTest, ManagedModeOnChange);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            ManagedModeProhibitsModification);
 
   static ManagedMode* GetInstance();
 
   virtual void InitImpl(Profile* profile);
 
   // Internal implementation for ExtensionManagementPolicy::Delegate methods.
   // If |error| is not NULL, it will be filled with an error message if the
   // requested extension action (install, modify status, etc.) is not permitted.
   bool ExtensionManagementPolicyImpl(string16* error) const;
 
   void LeaveManagedModeImpl();
 
+  const ManagedModeURLFilter* GetURLFilterImpl();
+
   void FinalizeEnter(bool result);
 
   // Platform-specific methods that confirm whether we can enter or leave
   // managed mode.
   virtual bool PlatformConfirmEnter();
   virtual bool PlatformConfirmLeave();
 
   virtual bool IsInManagedModeImpl() const;
 
   // Enables or disables managed mode and registers or unregisters it with the
   // ManagementPolicy. If |newly_managed_profile| is NULL, managed mode will
   // be disabled. Otherwise, managed mode will be enabled for that profile
   // (typically |managed_profile_|, but other values are possible during
   // testing).
   virtual void SetInManagedMode(Profile* newly_managed_profile);
 
+  void UpdateWhitelist();
+
   content::NotificationRegistrar registrar_;
 
+  scoped_ptr<URLFilterContext> url_filter_context_;
+
   std::set<Browser*> browsers_to_close_;
   std::vector<EnterCallback> callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(ManagedMode);
 };
 
 #endif  // CHROME_BROWSER_MANAGED_MODE_H_