Refactoring: Make IPC::Channel::TakeClientFileDescriptor() a ScopedFD.

chrome/browser/printing/cloud_print/test/cloud_print_proxy_process_browsertest.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.
 
 // Create a service process that uses a Mock to respond to the browser in order
 // to test launching the browser using the cloud print policy check command
 // line switch.
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 432 matching lines @@
                          base::GetCurrentProcId(), this,
                          base::RandInt(0, std::numeric_limits<int>::max()));
   startup_channel_ = IPC::ChannelProxy::Create(startup_channel_id_,
                                                IPC::Channel::MODE_SERVER,
                                                this,
                                                IOMessageLoopProxy());
 
 #if defined(OS_POSIX)
   base::FileHandleMappingVector ipc_file_list;
   ipc_file_list.push_back(std::make_pair(
-      startup_channel_->TakeClientFileDescriptor(),
+      startup_channel_->TakeClientFileDescriptor().release(),
       kPrimaryIPCChannel + base::GlobalDescriptors::kBaseDescriptor));
   base::LaunchOptions options;
   options.fds_to_remap = &ipc_file_list;
   base::ProcessHandle handle = SpawnChildWithOptions(name, options);
 #else
   base::ProcessHandle handle = SpawnChild(name);
 #endif
   EXPECT_TRUE(handle);
   return handle;
 }
@@ skipping 159 matching lines @@
   // condition.
   if (should_run_loop)
     run_loop.Run();
 
   EXPECT_EQ("", prefs->GetString(prefs::kCloudPrintEmail));
 
   ShutdownAndWaitForExitWithTimeout(handle);
   content::RunAllPendingInMessageLoop();
   profile_manager.DeleteTestingProfile("StartBrowserWithPolicy");
 }