Let the canonical name of invalid encoding be an empty string

base/i18n/character_encoding_unittest.cc

Index: base/i18n/character_encoding_unittest.cc
diff --git a/base/i18n/character_encoding_unittest.cc b/base/i18n/character_encoding_unittest.cc
index f93254b45b5b2c1ac32840e9546c75426d747de0..3c11ba30aa1b6f3eccc92121e5bcdf1f951bf434 100644
--- a/base/i18n/character_encoding_unittest.cc
+++ b/base/i18n/character_encoding_unittest.cc
@@ -9,16 +9,15 @@
 namespace base {
 
 TEST(CharacterEncodingTest, GetCanonicalEncodingNameByAliasName) {
-  EXPECT_STREQ("Big5", GetCanonicalEncodingNameByAliasName("Big5"));
-  EXPECT_STREQ("windows-874",
-               GetCanonicalEncodingNameByAliasName("windows-874"));
-  EXPECT_STREQ("ISO-8859-8", GetCanonicalEncodingNameByAliasName("ISO-8859-8"));
+  EXPECT_EQ("Big5", GetCanonicalEncodingNameByAliasName("Big5"));
+  EXPECT_EQ("windows-874", GetCanonicalEncodingNameByAliasName("windows-874"));
+  EXPECT_EQ("ISO-8859-8", GetCanonicalEncodingNameByAliasName("ISO-8859-8"));
 
   // Non-canonical alias names should be converted to a canonical one.
-  EXPECT_STREQ("UTF-8", GetCanonicalEncodingNameByAliasName("utf8"));
-  EXPECT_STREQ("gb18030", GetCanonicalEncodingNameByAliasName("GB18030"));
-  EXPECT_STREQ("windows-874", GetCanonicalEncodingNameByAliasName("tis-620"));
-  EXPECT_STREQ("EUC-KR", GetCanonicalEncodingNameByAliasName("ks_c_5601-1987"));
+  EXPECT_EQ("UTF-8", GetCanonicalEncodingNameByAliasName("utf8"));
+  EXPECT_EQ("gb18030", GetCanonicalEncodingNameByAliasName("GB18030"));
+  EXPECT_EQ("windows-874", GetCanonicalEncodingNameByAliasName("tis-620"));
+  EXPECT_EQ("EUC-KR", GetCanonicalEncodingNameByAliasName("ks_c_5601-1987"));
 }
 
 }  // namespace base