ipc: Convert k(u)int*max types from basictypes.h to std::numeric_limits variants.

ipc/ipc_channel.h

 // 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.
 
 #ifndef IPC_IPC_CHANNEL_H_
 #define IPC_IPC_CHANNEL_H_
 
+#include <stdint.h>
+
 #include <string>
 
 #if defined(OS_POSIX)
 #include <sys/types.h>
 #endif
 
 #include "base/compiler_specific.h"
 #include "base/files/scoped_file.h"
 #include "base/process/process.h"
 #include "ipc/ipc_channel_handle.h"
@@ skipping 54 matching lines @@
   };
 
   // Messages internal to the IPC implementation are defined here.
   // Uses Maximum value of message type (uint16), to avoid conflicting
   // with normal message types, which are enumeration constants starting from 0.
   enum {
     // The Hello message is sent by the peer when the channel is connected.
     // The message contains just the process id (pid).
     // The message has a special routing_id (MSG_ROUTING_NONE)
     // and type (HELLO_MESSAGE_TYPE).
-    HELLO_MESSAGE_TYPE = kuint16max,
+    HELLO_MESSAGE_TYPE = UINT16_MAX,
     // The CLOSE_FD_MESSAGE_TYPE is used in the IPC class to
     // work around a bug in sendmsg() on Mac. When an FD is sent
     // over the socket, a CLOSE_FD_MESSAGE is sent with hops = 2.
     // The client will return the message with hops = 1, *after* it
     // has received the message that contains the FD. When we
     // receive it again on the sender side, we close the FD.
     CLOSE_FD_MESSAGE_TYPE = HELLO_MESSAGE_TYPE - 1
   };
 
   // The maximum message size in bytes. Attempting to receive a message of this
@@ skipping 151 matching lines @@
 
 #if defined(OS_POSIX)
 // SocketPair() creates a pair of socket FDs suitable for using with
 // IPC::Channel.
 IPC_EXPORT bool SocketPair(int* fd1, int* fd2);
 #endif
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_CHANNEL_H_