Fix all Performance and Bug-Prone patterns in quic/core. No functional change. Not flag protected.

net/quic/core/reliable_quic_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/core/reliable_quic_stream.h"
 
 #include "base/logging.h"
 #include "net/quic/core/iovector.h"
 #include "net/quic/core/quic_bug_tracker.h"
 #include "net/quic/core/quic_flags.h"
@@ skipping 28 matching lines @@
   }
 
   return kMinimumFlowControlSendWindow;
 }
 
 }  // namespace
 
 ReliableQuicStream::PendingData::PendingData(
     string data_in,
     QuicAckListenerInterface* ack_listener_in)
-    : data(data_in), offset(0), ack_listener(ack_listener_in) {}
+    : data(std::move(data_in)),
+      offset(0),
+      ack_listener(ack_listener_in) {}
 
 ReliableQuicStream::PendingData::~PendingData() {}
 
 ReliableQuicStream::ReliableQuicStream(QuicStreamId id, QuicSession* session)
     : queued_data_bytes_(0),
       sequencer_(this, session->connection()->clock()),
       id_(id),
       session_(session),
       stream_bytes_read_(0),
       stream_bytes_written_(0),
@@ skipping 402 matching lines @@
   }
 }
 
 void ReliableQuicStream::UpdateSendWindowOffset(QuicStreamOffset new_window) {
   if (flow_controller_.UpdateSendWindowOffset(new_window)) {
     OnCanWrite();
   }
 }
 
 }  // namespace net