Update URLPatternSet to contain a std::set instead of std::vector.

chrome/common/extensions/user_script_unittest.cc

 // Copyright (c) 2011 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 "base/file_path.h"
 #include "base/pickle.h"
 #include "chrome/common/extensions/user_script.h"
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 190 matching lines @@
 
   EXPECT_EQ(2U, script2.css_scripts().size());
   for (size_t i = 0; i < script2.js_scripts().size(); ++i) {
     EXPECT_EQ(script1.css_scripts()[i].url(), script2.css_scripts()[i].url());
   }
 
   ASSERT_EQ(script1.globs().size(), script2.globs().size());
   for (size_t i = 0; i < script1.globs().size(); ++i) {
     EXPECT_EQ(script1.globs()[i], script2.globs()[i]);
   }
-  ASSERT_EQ(script1.url_patterns().size(), script2.url_patterns().size());
-  for (size_t i = 0; i < script1.url_patterns().size(); ++i) {
-    EXPECT_EQ(script1.url_patterns()[i].GetAsString(),
-              script2.url_patterns()[i].GetAsString());
-  }
+
+  ASSERT_EQ(script1.url_patterns(), script2.url_patterns());
 }
 
 TEST(ExtensionUserScriptTest, Defaults) {
   UserScript script;
   ASSERT_EQ(UserScript::DOCUMENT_IDLE, script.run_location());
 }