RulesRegistry for declarative APIs.

chrome/browser/extensions/api/declarative/rule_identifier.cc

Index: chrome/browser/extensions/api/declarative/rule_identifier.cc
diff --git a/chrome/browser/extensions/api/declarative/rule_identifier.cc b/chrome/browser/extensions/api/declarative/rule_identifier.cc
new file mode 100644
index 0000000000000000000000000000000000000000..05871accb986ee2bcbd0ab4c192ed6d4b2675006
--- /dev/null
+++ b/chrome/browser/extensions/api/declarative/rule_identifier.cc
@@ -0,0 +1,35 @@
+// 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.
+
+#include "chrome/browser/extensions/api/declarative/rule_identifier.h"
+
+namespace extensions {
+
+RuleIdentifier::RuleIdentifier(const std::string& extension_id,
+                               const std::string& rule_id)
+    : extension_id_(extension_id),
+      rule_id_(rule_id) {}
+
+RuleIdentifier::RuleIdentifier(const RuleIdentifier& other)
+: extension_id_(other.extension_id_),
+  rule_id_(other.rule_id_) {}
+
+RuleIdentifier::~RuleIdentifier() {}
+
+bool RuleIdentifier::operator<(const RuleIdentifier& other) const {
+  // These are ordered so that the elements with most entropy are compared
+  // first.
+  if (rule_id_ < other.rule_id_) return true;
+  if (rule_id_ > other.rule_id_) return false;
+  if (extension_id_ < other.extension_id_) return true;
+  return false;
+}
+
+RuleIdentifier& RuleIdentifier::operator=(const RuleIdentifier& other) {
+  extension_id_ = other.extension_id_;
+  rule_id_ = other.rule_id_;
+  return *this;
+}
+
+}  // extensions