Added PermissionIDSet to APIPermissions

extensions/common/permissions/coalesced_permission_message.h

 // Copyright 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 EXTENSIONS_COMMON_PERMISSIONS_COALESCED_PERMISSION_MESSAGE_H_
 #define EXTENSIONS_COMMON_PERMISSIONS_COALESCED_PERMISSION_MESSAGE_H_
 
-#include <set>
+#include <list>
 #include <string>
 
-#include "base/memory/scoped_vector.h"
-#include "extensions/common/permissions/api_permission.h"
 #include "extensions/common/permissions/api_permission_set.h"
 
 namespace extensions {
 
 // The new kind of Chrome app/extension permission messages.
 //
 // A CoalescedPermissionMessage is an immutable object that represents a single
 // bullet in the list of an app or extension's permissions. It contains the
 // localized permission message to display, as well as the set of permissions
 // that contributed to that message (and should be revoked if this permission is
@@ skipping 29 matching lines @@
   const base::string16& message() const { return message_; }
   const PermissionIDSet& permissions() const { return permissions_; }
   const std::vector<base::string16>& submessages() const {
     return submessages_;
   }
 
  private:
   const base::string16 message_;
   const PermissionIDSet permissions_;
   const std::vector<base::string16> submessages_;
-
-  DISALLOW_COPY_AND_ASSIGN(CoalescedPermissionMessage);
 };
 
-typedef std::vector<CoalescedPermissionMessage> CoalescedPermissionMessages;
+// Use a linked list to store our list of messages, since we will commonly be
+// iterating/removing elements but should never be accessing by index.
+typedef std::list<CoalescedPermissionMessage> CoalescedPermissionMessages;
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_PERMISSIONS_COALESCED_PERMISSION_MESSAGE_H_