StringPiece will be replaced with std::string_view. std::string_view doesn't have starts_with.

net/tools/quic/test_tools/quic_test_client.cc

Index: net/tools/quic/test_tools/quic_test_client.cc
diff --git a/net/tools/quic/test_tools/quic_test_client.cc b/net/tools/quic/test_tools/quic_test_client.cc
index 41846fd7d14d7c4cb611697c457829f999a3b216..e58916b0ee50e81677712e593fe8f8a2d0184a24 100644
--- a/net/tools/quic/test_tools/quic_test_client.cc
+++ b/net/tools/quic/test_tools/quic_test_client.cc
@@ -131,7 +131,9 @@ BalsaHeaders* MungeHeaders(const BalsaHeaders* const_headers) {
   }
   BalsaHeaders* headers = new BalsaHeaders;
   headers->CopyFrom(*const_headers);
-  if (!uri.starts_with("https://") && !uri.starts_with("http://")) {
+  if (!base::StartsWith(uri, "https://",
+                        base::CompareCase::INSENSITIVE_ASCII) &&
+      !base::StartsWith(uri, "http://", base::CompareCase::INSENSITIVE_ASCII)) {
     // If we have a relative URL, set some defaults.
     string full_uri = "https://test.example.com";
     full_uri.append(uri.as_string());