Block plugins for platform apps

chrome/browser/content_settings/content_settings_platform_app_provider.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_CONTENT_SETTINGS_CONTENT_SETTINGS_PLATFORM_APP_PROVIDER_H_
+#define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PLATFORM_APP_PROVIDER_H_
+
+#include "base/synchronization/lock.h"
+#include "chrome/browser/content_settings/content_settings_observable_provider.h"
+#include "chrome/browser/content_settings/content_settings_origin_identifier_value_map.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+namespace content_settings {
+
+// A content settings provider which disables certain plugins for platform apps.
+class PlatformAppProvider : public ObservableProvider,
+                            public content::NotificationObserver {
+ public:
+  PlatformAppProvider();
+
+  virtual ~PlatformAppProvider();
+
+  // ProviderInterface methods:
+  virtual RuleIterator* GetRuleIterator(
+      ContentSettingsType content_type,
+      const ResourceIdentifier& resource_identifier,
+      bool incognito) const OVERRIDE;
+
+  virtual bool SetWebsiteSetting(
+      const ContentSettingsPattern& primary_pattern,
+      const ContentSettingsPattern& secondary_pattern,
+      ContentSettingsType content_type,
+      const ResourceIdentifier& resource_identifier,
+      Value* value) OVERRIDE;
+
+  virtual void ClearAllContentSettingsRules(ContentSettingsType content_type)
+      OVERRIDE;
+
+  virtual void ShutdownOnUIThread() OVERRIDE;
+
+  // content::NotificationObserver implementation.
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+ private:
+  OriginIdentifierValueMap value_map_;
+
+  // Used around accesses to the |value_map_| list to guarantee thread safety.
+  mutable base::Lock lock_;
+  content::NotificationRegistrar* registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(PlatformAppProvider);
+};
+
+}  // namespace content_settings
+
+#endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PLATFORM_APP_PROVIDER_H_