Drop unused base/tuple.h inclusion

device/hid/hid_connection_linux.cc

 // Copyright (c) 2014 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 "device/hid/hid_connection_linux.h"
 
 #include <errno.h>
 #include <linux/hidraw.h>
 #include <sys/ioctl.h>
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_pump_libevent.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/threading/thread_restrictions.h"
-#include "base/tuple.h"
 #include "device/hid/hid_service.h"
 
 // These are already defined in newer versions of linux/hidraw.h.
 #ifndef HIDIOCSFEATURE
 #define HIDIOCSFEATURE(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x06, len)
 #endif
 #ifndef HIDIOCGFEATURE
 #define HIDIOCGFEATURE(len) _IOC(_IOC_WRITE | _IOC_READ, 'H', 0x07, len)
 #endif
 
@@ skipping 261 matching lines @@
     PendingHidReport report = pending_reports_.front();
 
     pending_reports_.pop();
     if (CompleteRead(report.buffer, report.size, read.callback)) {
       pending_reads_.pop();
     }
   }
 }
 
 }  // namespace device