Move shared files in net/quic/ into net/quic/core/

net/quic/core/quic_clock.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/quic_clock.h"
+#include "net/quic/core/quic_clock.h"
 
 #include "base/time/time.h"
 
 namespace net {
 
 QuicClock::QuicClock() {}
 
 QuicClock::~QuicClock() {}
 
 QuicTime QuicClock::ApproximateNow() const {
@@ skipping 23 matching lines @@
   //
   // result = Now() - (WallNow() - walltime)
   return Now() - QuicTime::Delta::FromMicroseconds(
                      WallNow()
                          .Subtract(QuicTime::Delta::FromMicroseconds(
                              walltime.ToUNIXMicroseconds()))
                          .ToUNIXMicroseconds());
 }
 
 }  // namespace net