Move Mac LaunchOnStartup enable/disable to File thread

chrome/browser/background_mode_manager_chromeos.cc

Index: chrome/browser/background_mode_manager_chromeos.cc
diff --git a/chrome/browser/background_mode_manager_chromeos.cc b/chrome/browser/background_mode_manager_chromeos.cc
new file mode 100644
index 0000000000000000000000000000000000000000..90498b1a5275d9ccef2cc8f457c224d3a0b33863
--- /dev/null
+++ b/chrome/browser/background_mode_manager_chromeos.cc
@@ -0,0 +1,13 @@
+// Copyright (c) 2010 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 "chrome/browser/background_mode_manager.h"
+#include "grit/generated_resources.h"

[Andrew T Wilson (Slow), 2010/12/04 18:49:48]

Blank line between "#include 'chrome/browser/background_mode_manager.h" and
other includes.

[The wrong rickcam account, 2010/12/07 22:59:57]

Done.

+
+void BackgroundModeManager::EnableLaunchOnStartup(bool should_launch) {

[Andrew T Wilson (Slow), 2010/12/04 18:49:48]

I'm torn about whether we should put a NOT_REACHED in here.

[The wrong rickcam account, 2010/12/07 22:59:57]

Done.

I thought about it and decided against with the idea that it would put
(unnecessary??) burden on BackgroundModeManager to avoid calling
EnableLaunchOnStartup at all.

Now that we've dug in a bit more on the details of NOTREACHED -- it's a DCHECK
-- I'm going to say that Yes, we should add it here.

+}
+
+string16 BackgroundModeManager::GetPreferencesMenuLabel() {
+  return l10n_util::GetStringUTF16(IDS_SETTINGS);
+}