Remove some legacy versions of StartsWith and EndsWith.

components/search/search.cc

Index: components/search/search.cc
diff --git a/components/search/search.cc b/components/search/search.cc
index 8c50d162787baf68b2cb1efe2964c735cf8797db..92b8ccb7abac3e6f8ce9b218d4f1f7d9b32c2e55 100644
--- a/components/search/search.cc
+++ b/components/search/search.cc
@@ -90,7 +90,8 @@ bool GetFieldTrialInfo(FieldTrialFlags* flags) {
         kInstantExtendedFieldTrialName);
   }
 
-  if (base::EndsWith(group_name, kDisablingSuffix, true))
+  if (base::EndsWith(group_name, kDisablingSuffix,
+                     base::CompareCase::SENSITIVE))
     return false;
 
   // We have a valid trial that isn't disabled. Extract the flags.