Add a new QUIC platform API for text utilities.

net/quic/chromium/crypto_test_utils_chromium.cc

 // Copyright 2013 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 <memory>
 #include <utility>
 
 #include "base/callback_helpers.h"
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 17 matching lines @@
 #include "net/log/net_log_with_source.h"
 #include "net/quic/chromium/crypto/proof_source_chromium.h"
 #include "net/quic/chromium/crypto/proof_verifier_chromium.h"
 #include "net/quic/core/crypto/crypto_utils.h"
 #include "net/quic/test_tools/crypto_test_utils.h"
 #include "net/ssl/ssl_config_service.h"
 #include "net/test/cert_test_util.h"
 #include "net/test/test_data_directory.h"
 
 using base::StringPiece;
-using base::StringPrintf;
 using std::string;
 
 namespace net {
 
 namespace test {
 
 namespace {
 
 class TestProofVerifierChromium : public ProofVerifierChromium {
  public:
@@ skipping 63 matching lines @@
 
 // static
 ProofVerifyContext* CryptoTestUtils::ProofVerifyContextForTesting() {
   return new ProofVerifyContextChromium(/*cert_verify_flags=*/0,
                                         NetLogWithSource());
 }
 
 }  // namespace test
 
 }  // namespace net