Add a HostContentSettingsMap layer for Supervised Users.

components/content_settings/core/browser/content_settings_binary_value_map.h

Index: components/content_settings/core/browser/content_settings_binary_value_map.h
diff --git a/components/content_settings/core/browser/content_settings_binary_value_map.h b/components/content_settings/core/browser/content_settings_binary_value_map.h
new file mode 100644
index 0000000000000000000000000000000000000000..3416a13cd15a4232e05539974296046afb82cb0e
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+++ b/components/content_settings/core/browser/content_settings_binary_value_map.h
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+// Copyright (c) 2015 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 COMPONENTS_CONTENT_SETTINGS_CORE_BROWSER_CONTENT_SETTINGS_BINARY_VALUE_MAP_H_
+#define COMPONENTS_CONTENT_SETTINGS_CORE_BROWSER_CONTENT_SETTINGS_BINARY_VALUE_MAP_H_
+
+#include "components/content_settings/core/browser/content_settings_provider.h"
+#include "components/content_settings/core/common/content_settings_types.h"
+
+namespace base {
+class AutoLock;
+}  // namespace base
+
+namespace content_settings {
+
+class RuleIterator;
+
+// A simplified value map that can be used to disable or enable the entire
+// Content Setting. The default behaviour is enabling the Content Setting if
+// it is not set explicitly.
+class BinaryValueMap {
+ public:
+  BinaryValueMap();
+
+  RuleIterator* GetRuleIterator(ContentSettingsType content_type,
+                                const ResourceIdentifier& resource_identifier,
+                                scoped_ptr<base::AutoLock> lock) const;
+  void SetContentSettingDisabled(ContentSettingsType content_type,
+                                 bool disabled);
+  bool IsContentSettingEnabled(ContentSettingsType content_type) const;
+
+ private:
+  bool is_enabled_[CONTENT_SETTINGS_NUM_TYPES];
+};
+
+}  // namespace content_settings
+
+#endif  // COMPONENTS_CONTENT_SETTINGS_CORE_BROWSER_CONTENT_SETTINGS_BINARY_VALUE_MAP_H_