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

chrome/common/extensions/url_pattern_set_unittest.cc

Index: chrome/common/extensions/url_pattern_set_unittest.cc
diff --git a/chrome/common/extensions/url_pattern_set_unittest.cc b/chrome/common/extensions/url_pattern_set_unittest.cc
index 8c05f2c705353da53725f8526a719cf163002e20..f9717ef36d572e85e9e9d53d7aeb41b313e57181 100644
--- a/chrome/common/extensions/url_pattern_set_unittest.cc
+++ b/chrome/common/extensions/url_pattern_set_unittest.cc
@@ -7,27 +7,6 @@
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-namespace {
-
-static void AssertEqualExtents(const URLPatternSet& extent1,
-                               const URLPatternSet& extent2) {
-  URLPatternList patterns1 = extent1.patterns();
-  URLPatternList patterns2 = extent2.patterns();
-  std::set<std::string> strings1;
-  EXPECT_EQ(patterns1.size(), patterns2.size());
-
-  for (size_t i = 0; i < patterns1.size(); ++i)
-    strings1.insert(patterns1.at(i).GetAsString());
-
-  std::set<std::string> strings2;
-  for (size_t i = 0; i < patterns2.size(); ++i)
-    strings2.insert(patterns2.at(i).GetAsString());
-
-  EXPECT_EQ(strings1, strings2);
-}
-
-} // namespace
-
 static const int kAllSchemes =
     URLPattern::SCHEME_HTTP |
     URLPattern::SCHEME_HTTPS |
@@ -96,7 +75,7 @@ TEST(URLPatternSetTest, CreateUnion) {
   // Union with an empty set.
   URLPatternSet result;
   URLPatternSet::CreateUnion(extent1, empty_extent, &result);
-  AssertEqualExtents(expected, result);
+  EXPECT_EQ(expected, result);
 
   // Union with a real set (including a duplicate).
   URLPatternSet extent2;
@@ -111,5 +90,5 @@ TEST(URLPatternSetTest, CreateUnion) {
 
   result.ClearPatterns();
   URLPatternSet::CreateUnion(extent1, extent2, &result);
-  AssertEqualExtents(expected, result);
+  EXPECT_EQ(expected, result);
 }