MultiProcessTest: Update SpawnChild* to return a Process.

ipc/sync_socket_unittest.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 <stdio.h>
 #include <string>
 #include <sstream>
 
@@ skipping 166 matching lines @@
   // Immediately after creation there should be no pending bytes.
   EXPECT_EQ(0U, pair[0].Peek());
   EXPECT_EQ(0U, pair[1].Peek());
   base::SyncSocket::Handle target_handle;
   // Connect the channel and listener.
   ASSERT_TRUE(ConnectChannel());
   listener.Init(&pair[0], channel());
 #if defined(OS_WIN)
   // On windows we need to duplicate the handle into the server process.
   BOOL retval = DuplicateHandle(GetCurrentProcess(), pair[1].handle(),
-                                client_process(), &target_handle,
+                                client_process().Handle(), &target_handle,
                                 0, FALSE, DUPLICATE_SAME_ACCESS);
   EXPECT_TRUE(retval);
   // Set up a message to pass the handle to the server.
   IPC::Message* msg = new MsgClassSetHandle(target_handle);
 #else
   target_handle = pair[1].handle();
   // Set up a message to pass the handle to the server.
   base::FileDescriptor filedesc(target_handle, false);
   IPC::Message* msg = new MsgClassSetHandle(filedesc);
 #endif  // defined(OS_WIN)
@@ skipping 101 matching lines @@
 
   // Read from another socket to free some space for a new write.
   char hello[kHelloStringLength] = {0};
   pair[1].Receive(&hello[0], sizeof(hello));
 
   // Should be able to write more data to the buffer now.
   EXPECT_EQ(kHelloStringLength, pair[0].Send(kHelloString, kHelloStringLength));
 }
 
 }  // namespace