Cleanup: Better constify some strings in net/.

net/ftp/ftp_directory_listing_parser_ls_unittest.cc

Index: net/ftp/ftp_directory_listing_parser_ls_unittest.cc
diff --git a/net/ftp/ftp_directory_listing_parser_ls_unittest.cc b/net/ftp/ftp_directory_listing_parser_ls_unittest.cc
index 313ef664c739397dcdf903ae934cd6154672d4f8..6657de9b6dca470bba1f9c3d4cbb72e550cff5bd 100644
--- a/net/ftp/ftp_directory_listing_parser_ls_unittest.cc
+++ b/net/ftp/ftp_directory_listing_parser_ls_unittest.cc
@@ -167,7 +167,7 @@ TEST_F(FtpDirectoryListingParserLsTest, Good) {
 }
 
 TEST_F(FtpDirectoryListingParserLsTest, Ignored) {
-  const char* ignored_cases[] = {
+  const char* const ignored_cases[] = {
     "drwxr-xr-x 2 0 0 4096 Mar 18  2007  ",  // http://crbug.com/60065
 
     "ftpd: .: Permission denied",
@@ -194,7 +194,7 @@ TEST_F(FtpDirectoryListingParserLsTest, Ignored) {
 }
 
 TEST_F(FtpDirectoryListingParserLsTest, Bad) {
-  const char* bad_cases[] = {
+  const char* const bad_cases[] = {
     " foo",
     "garbage",
     "-rw-r--r-- ftp ftp",