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..91bfb2bf4631cd8299384711f29e1253046c823c
--- /dev/null
+++ b/components/content_settings/core/browser/content_settings_binary_value_map.h
@@ -0,0 +1,41 @@
+// 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;

[Bernhard Bauer, 2015/02/05 12:07:51]

Nit: The empty lines around this line aren't necessary.

[knn, 2015/02/26 12:07:29]

Done.

+
+}  // 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,

[Bernhard Bauer, 2015/02/05 12:07:51]

Make this return a scoped_ptr?

[knn, 2015/02/26 12:07:29]

This is a ProviderInterface implementation. Needs to refactored in other places.

[Bernhard Bauer, 2015/02/26 12:44:57]

Wait, this class doesn't implement an interface. If this is used by something
else that implements the interface, we can still use scoped_ptr here, and just
release it when the interface demands a raw pointer.

+                                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_