Revert of Remove some legacy versions of StartsWith and EndsWith.

net/base/net_util.cc

Index: net/base/net_util.cc
diff --git a/net/base/net_util.cc b/net/base/net_util.cc
index e045441d510576ef6599d07372a889ede46a71ec..39a8591a3968d60de4d532a696fa4554191f917f 100644
--- a/net/base/net_util.cc
+++ b/net/base/net_util.cc
@@ -155,7 +155,7 @@
 }
 
 bool IsNormalizedLocalhostTLD(const std::string& host) {
-  return base::EndsWith(host, ".localhost", base::CompareCase::SENSITIVE);
+  return base::EndsWith(host, ".localhost", true);
 }
 
 // |host| should be normalized.
@@ -801,7 +801,7 @@
   };
   const std::string& host = url.host();
   for (const char* suffix : kGoogleHostSuffixes) {
-    if (base::EndsWith(host, suffix, base::CompareCase::INSENSITIVE_ASCII))
+    if (base::EndsWith(host, suffix, false))
       return true;
   }
   return false;