Add extension permissions for new settings override API.

chrome/common/extensions/permissions/settings_override_permission.h

Index: chrome/common/extensions/permissions/settings_override_permission.h
diff --git a/chrome/common/extensions/permissions/settings_override_permission.h b/chrome/common/extensions/permissions/settings_override_permission.h
new file mode 100644
index 0000000000000000000000000000000000000000..3f2958d26c8d40f752755ee9ac2ba1060ce431d7
--- /dev/null
+++ b/chrome/common/extensions/permissions/settings_override_permission.h
@@ -0,0 +1,44 @@
+// Copyright (c) 2013 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_COMMON_EXTENSIONS_PERMISSIONS_SETTINGS_OVERRIDE_PERMISSION_H_
+#define CHROME_COMMON_EXTENSIONS_PERMISSIONS_SETTINGS_OVERRIDE_PERMISSION_H_
+
+#include <string>
+
+#include "extensions/common/permissions/api_permission.h"
+
+namespace extensions {
+
+// Takes care of creating custom permission messages for extensions that
+// override settings.
+class SettingsOverrideAPIPermission : public APIPermission {
+ public:
+  SettingsOverrideAPIPermission(
+      const APIPermissionInfo* permission, const std::string& setting_value);
+  virtual ~SettingsOverrideAPIPermission();
+
+  // APIPermission overrides.
+  virtual bool HasMessages() const OVERRIDE;
+  virtual PermissionMessages GetMessages() const OVERRIDE;
+  virtual bool Check(const APIPermission::CheckParam* param) const OVERRIDE;
+  virtual bool Contains(const APIPermission* rhs) const OVERRIDE;
+  virtual bool Equal(const APIPermission* rhs) const OVERRIDE;
+  virtual bool FromValue(const base::Value* value) OVERRIDE;
+  virtual scoped_ptr<base::Value> ToValue() const OVERRIDE;
+  virtual APIPermission* Clone() const OVERRIDE;
+  virtual APIPermission* Diff(const APIPermission* rhs) const OVERRIDE;
+  virtual APIPermission* Union(const APIPermission* rhs) const OVERRIDE;
+  virtual APIPermission* Intersect(const APIPermission* rhs) const OVERRIDE;
+  virtual void Write(IPC::Message* m) const OVERRIDE;
+  virtual bool Read(const IPC::Message* m, PickleIterator* iter) OVERRIDE;
+  virtual void Log(std::string* log) const OVERRIDE;
+
+ private:
+  std::string setting_value_;
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_COMMON_EXTENSIONS_PERMISSIONS_SETTINGS_OVERRIDE_PERMISSION_H_