autofill: switch autofill_regexes to RE2 library

components/autofill/core/common/autofill_regexes_unittest.cc

Index: components/autofill/core/common/autofill_regexes_unittest.cc
diff --git a/components/autofill/core/common/autofill_regexes_unittest.cc b/components/autofill/core/common/autofill_regexes_unittest.cc
index 05895c7360f5cf8f189be0688a06153d06043738..389ee8e68ab817a1726581fab47aef836e4ab71d 100644
--- a/components/autofill/core/common/autofill_regexes_unittest.cc
+++ b/components/autofill/core/common/autofill_regexes_unittest.cc
@@ -4,13 +4,10 @@
 
 #include "components/autofill/core/common/autofill_regexes.h"
 
-#include "base/strings/string16.h"
-#include "base/strings/utf_string_conversions.h"
+#include "base/macros.h"
 #include "components/autofill/core/browser/autofill_regex_constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using base::ASCIIToUTF16;
-
 namespace autofill {
 
 TEST(AutofillRegexesTest, AutofillRegexes) {
@@ -38,8 +35,7 @@ TEST(AutofillRegexesTest, AutofillRegexes) {
     const TestCase& test_case = kPositiveCases[i];
     SCOPED_TRACE(test_case.input);
     SCOPED_TRACE(test_case.pattern);
-    EXPECT_TRUE(MatchesPattern(ASCIIToUTF16(test_case.input),
-                               ASCIIToUTF16(test_case.pattern)));
+    EXPECT_TRUE(MatchesPattern(test_case.input, test_case.pattern));
   }
 
   const TestCase kNegativeCases[] = {
@@ -58,8 +54,7 @@ TEST(AutofillRegexesTest, AutofillRegexes) {
     const TestCase& test_case = kNegativeCases[i];
     SCOPED_TRACE(test_case.input);
     SCOPED_TRACE(test_case.pattern);
-    EXPECT_FALSE(MatchesPattern(ASCIIToUTF16(test_case.input),
-                                ASCIIToUTF16(test_case.pattern)));
+    EXPECT_FALSE(MatchesPattern(test_case.input, test_case.pattern));
   }
 }