Add a new QUIC platform API for text utilities.

net/tools/quic/quic_spdy_client_stream_test.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 "net/tools/quic/quic_spdy_client_stream.h"
 
 #include <memory>
 
 #include "base/macros.h"
-#include "base/strings/string_number_conversions.h"
 #include "net/quic/core/quic_utils.h"
 #include "net/quic/core/spdy_utils.h"
 #include "net/quic/platform/api/quic_socket_address.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_test_utils.h"
 #include "net/tools/quic/quic_client_session.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::IntToString;
 using std::string;
 using testing::StrictMock;
 using testing::TestWithParam;
@@ skipping 156 matching lines @@
   // Send headers as usual.
   auto headers = AsHeaderList(headers_);
   stream_->OnStreamHeaderList(false, headers.uncompressed_header_bytes(),
                               headers);
 
   // Send trailers before sending the body. Even though a FIN has been received
   // the stream should not be closed, as it does not yet have all the data bytes
   // promised by the final offset field.
   SpdyHeaderBlock trailer_block;
   trailer_block["trailer key"] = "trailer value";
-  trailer_block[kFinalOffsetHeaderKey] = IntToString(body_.size());
+  trailer_block[kFinalOffsetHeaderKey] =
+      QuicTextUtils::Uint64ToString(body_.size());
   auto trailers = AsHeaderList(trailer_block);
   stream_->OnStreamHeaderList(true, trailers.uncompressed_header_bytes(),
                               trailers);
 
   // Now send the body, which should close the stream as the FIN has been
   // received, as well as all data.
   EXPECT_CALL(session_, CloseStream(stream_->id()));
   stream_->OnStreamFrame(
       QuicStreamFrame(stream_->id(), /*fin=*/false, /*offset=*/0, body_));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net