libchrome: Several upstreamable fixes from libchrome

base/sync_socket_posix.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 "base/sync_socket.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
 #include <stddef.h>
@@ skipping 87 matching lines @@
 
   return true;
 }
 
 // static
 SyncSocket::Handle SyncSocket::UnwrapHandle(
     const TransitDescriptor& descriptor) {
   return descriptor.fd;
 }
 
-bool SyncSocket::PrepareTransitDescriptor(ProcessHandle peer_process_handle,
-                                          TransitDescriptor* descriptor) {
+bool SyncSocket::PrepareTransitDescriptor(
+    ProcessHandle /* peer_process_handle */,
+    TransitDescriptor* descriptor) {
   descriptor->fd = handle();
   descriptor->auto_close = false;
   return descriptor->fd != kInvalidHandle;
 }
 
 bool SyncSocket::Close() {
   const bool retval = CloseHandle(handle_);
   handle_ = kInvalidHandle;
   return retval;
 }
@@ skipping 119 matching lines @@
   return len;
 }
 
 // static
 bool CancelableSyncSocket::CreatePair(CancelableSyncSocket* socket_a,
                                       CancelableSyncSocket* socket_b) {
   return SyncSocket::CreatePair(socket_a, socket_b);
 }
 
 }  // namespace base