Use a direct include of strings headers in ipc/, jingle/, media/.

ipc/ipc_channel.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 "ipc/ipc_channel.h"
 
 #include <limits>
 
 #include "base/atomic_sequence_num.h"
 #include "base/process_util.h"
 #include "base/rand_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 
 #if !defined(OS_NACL)
 namespace {
 
 // Global atomic used to guarantee channel IDs are unique.
 base::StaticAtomicSequenceNumber g_last_id;
 
 }  // namespace
 #endif
 
@@ skipping 11 matching lines @@
 
   int process_id = base::GetCurrentProcId();
   return base::StringPrintf("%d.%u.%d",
       process_id,
       g_last_id.GetNext(),
       base::RandInt(0, std::numeric_limits<int32>::max()));
 }
 
 }  // namespace IPC