Add a new QUIC platform API for text utilities.

net/tools/quic/test_tools/quic_test_client.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/tools/quic/test_tools/quic_test_client.h"
 
 #include <memory>
 #include <utility>
 #include <vector>
 
 #include "base/memory/ptr_util.h"
-#include "base/strings/string_util.h"
 #include "base/time/time.h"
 #include "net/base/completion_callback.h"
 #include "net/base/net_errors.h"
 #include "net/cert/cert_verify_result.h"
 #include "net/cert/x509_certificate.h"
 #include "net/quic/core/crypto/proof_verifier.h"
 #include "net/quic/core/quic_flags.h"
 #include "net/quic/core/quic_server_id.h"
 #include "net/quic/core/quic_utils.h"
 #include "net/quic/core/spdy_utils.h"
+#include "net/quic/platform/api/quic_text_utils.h"
 #include "net/quic/test_tools/crypto_test_utils.h"
 #include "net/quic/test_tools/quic_connection_peer.h"
 #include "net/quic/test_tools/quic_spdy_session_peer.h"
 #include "net/quic/test_tools/quic_stream_peer.h"
 #include "net/quic/test_tools/quic_test_utils.h"
 #include "net/tools/quic/quic_epoll_connection_helper.h"
 #include "net/tools/quic/quic_packet_writer_wrapper.h"
 #include "net/tools/quic/quic_spdy_client_stream.h"
 #include "net/tools/quic/test_tools/quic_client_peer.h"
 #include "url/gurl.h"
@@ skipping 661 matching lines @@
 
 void QuicTestClient::TestClientDataToResend::Resend() {
   test_client_->GetOrCreateStreamAndSendRequest(headers_.get(), body_, fin_,
                                                 ack_listener_);
   headers_.reset();
 }
 
 bool QuicTestClient::PopulateHeaderBlockFromUrl(const string& uri,
                                                 SpdyHeaderBlock* headers) {
   string url;
-  if (base::StartsWith(uri, "https://", base::CompareCase::INSENSITIVE_ASCII) ||
-      base::StartsWith(uri, "http://", base::CompareCase::INSENSITIVE_ASCII)) {
+  if (QuicTextUtils::StartsWith(uri, "https://") ||
+      QuicTextUtils::StartsWith(uri, "http://")) {
     url = uri;
   } else if (uri[0] == '/') {
     url = "https://" + client_->server_id().host() + uri;
   } else {
     url = "https://" + uri;
   }
   return SpdyUtils::PopulateHeaderBlockFromUrl(url, headers);
 }
 
 }  // namespace test
 }  // namespace net