Add support for backgrounding processes on the Mac

content/browser/child_process_launcher.cc

Index: content/browser/child_process_launcher.cc
diff --git a/content/browser/child_process_launcher.cc b/content/browser/child_process_launcher.cc
index 28be72bb9c32eb853702adbdb0726379a3f9825c..21c02b60bd2ab3ee27932cc8ae2ad0bff6f84b44 100644
--- a/content/browser/child_process_launcher.cc
+++ b/content/browser/child_process_launcher.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 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.
 
@@ -9,6 +9,7 @@
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/metrics/field_trial.h"

[Avi (use Gerrit), 2015/04/21 20:59:45]

Do you need this include?

[shrike, 2015/04/21 21:08:33]

No - removed.

 #include "base/metrics/histogram.h"
 #include "base/process/process.h"
 #include "base/profiler/scoped_tracker.h"
@@ -19,6 +20,7 @@
 #include "content/public/common/content_switches.h"
 #include "content/public/common/result_codes.h"
 #include "content/public/common/sandboxed_process_launcher_delegate.h"
+#include "content/shell/common/shell_switches.h"

[Avi (use Gerrit), 2015/04/21 20:59:45]

You still need to remove this line.

[shrike, 2015/04/21 21:08:33]

There was an existing ../content_switches.h include before my modifications - I
thought this was it but I see it's not. Removed.

 
 #if defined(OS_WIN)
 #include "base/files/file_path.h"
@@ -269,7 +271,12 @@ void TerminateOnLauncherThread(bool zygote, base::Process process) {
 void SetProcessBackgroundedOnLauncherThread(base::Process process,
                                             bool background) {
   DCHECK_CURRENTLY_ON(BrowserThread::PROCESS_LAUNCHER);
+#if defined(OS_MACOSX)
+  MachBroker* broker = MachBroker::GetInstance();
+  process.SetProcessBackgrounded(broker->TaskForPid(process.Pid()), background);
+#else
   process.SetProcessBackgrounded(background);
+#endif  // defined(OS_MACOSX)
 #if defined(OS_ANDROID)
   SetChildProcessInForeground(process.Handle(), !background);
 #endif