Add QuicStringPiece which is actually StringPiece.

net/quic/chromium/quic_chromium_client_stream.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/quic/chromium/quic_chromium_client_stream.h"
 
 #include <utility>
 
 #include "base/bind_helpers.h"
 #include "base/callback_helpers.h"
@@ skipping 127 matching lines @@
 }
 
 SpdyPriority QuicChromiumClientStream::priority() const {
   if (delegate_ && delegate_->HasSendHeadersComplete()) {
     return QuicSpdyStream::priority();
   }
   return net::kV3HighestPriority;
 }
 
 int QuicChromiumClientStream::WriteStreamData(
-    base::StringPiece data,
+    QuicStringPiece data,
     bool fin,
     const CompletionCallback& callback) {
   // We should not have data buffered.
   DCHECK(!HasBufferedData());
   // Writes the data, or buffers it.
   WriteOrBufferData(data, fin, nullptr);
   if (!HasBufferedData()) {
     return OK;
   }
 
   callback_ = callback;
   return ERR_IO_PENDING;
 }
 
 int QuicChromiumClientStream::WritevStreamData(
     const std::vector<scoped_refptr<IOBuffer>>& buffers,
     const std::vector<int>& lengths,
     bool fin,
     const CompletionCallback& callback) {
   // Must not be called when data is buffered.
   DCHECK(!HasBufferedData());
   // Writes the data, or buffers it.
   for (size_t i = 0; i < buffers.size(); ++i) {
     bool is_fin = fin && (i == buffers.size() - 1);
-    base::StringPiece string_data(buffers[i]->data(), lengths[i]);
+    QuicStringPiece string_data(buffers[i]->data(), lengths[i]);
     WriteOrBufferData(string_data, is_fin, nullptr);
   }
   if (!HasBufferedData()) {
     return OK;
   }
 
   callback_ = callback;
   return ERR_IO_PENDING;
 }
 
@@ skipping 101 matching lines @@
 
 void QuicChromiumClientStream::DisableConnectionMigration() {
   can_migrate_ = false;
 }
 
 bool QuicChromiumClientStream::IsFirstStream() {
   return id() == kHeadersStreamId + 2;
 }
 
 }  // namespace net