Remove legacy StartsWithASCII function.

chromeos/dbus/session_manager_client.cc

Index: chromeos/dbus/session_manager_client.cc
diff --git a/chromeos/dbus/session_manager_client.cc b/chromeos/dbus/session_manager_client.cc
index 395631c4777e2d3ce81c9cab2c3275e11ec4abf2..438ec05c093fafbbe8d81bc7e40814fdb97b9ae6 100644
--- a/chromeos/dbus/session_manager_client.cc
+++ b/chromeos/dbus/session_manager_client.cc
@@ -565,7 +565,8 @@ class SessionManagerClientImpl : public SessionManagerClient {
       LOG(ERROR) << "Invalid signal: " << signal->ToString();
       return;
     }
-    const bool success = base::StartsWithASCII(result_string, "success", false);
+    const bool success = base::StartsWith(result_string, "success",
+                                          base::CompareCase::INSENSITIVE_ASCII);
     FOR_EACH_OBSERVER(Observer, observers_, OwnerKeySet(success));
   }
 
@@ -577,7 +578,8 @@ class SessionManagerClientImpl : public SessionManagerClient {
       LOG(ERROR) << "Invalid signal: " << signal->ToString();
       return;
     }
-    const bool success = base::StartsWithASCII(result_string, "success", false);
+    const bool success = base::StartsWith(result_string, "success",
+                                          base::CompareCase::INSENSITIVE_ASCII);
     FOR_EACH_OBSERVER(Observer, observers_, PropertyChangeComplete(success));
   }