base::Bind: Convert BackgroundModeManager Tasks.

chrome/browser/background/background_mode_manager_mac.mm

Index: chrome/browser/background/background_mode_manager_mac.mm
diff --git a/chrome/browser/background/background_mode_manager_mac.mm b/chrome/browser/background/background_mode_manager_mac.mm
index 120aa37bd293a014b775cb217de7bc98bdde4407..e0ff3426a7e7b9b066424144351368cf26d8bc7b 100644
--- a/chrome/browser/background/background_mode_manager_mac.mm
+++ b/chrome/browser/background/background_mode_manager_mac.mm
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/bind.h"
 #include "base/command_line.h"
 #include "base/mac/mac_util.h"
 #include "chrome/browser/background/background_mode_manager.h"
@@ -17,22 +18,7 @@ using content::BrowserThread;
 
 namespace {
 
-class DisableLaunchOnStartupTask : public Task {
- public:
-  virtual void Run();
-};
-
-class EnableLaunchOnStartupTask : public Task {
- public:
-  virtual void Run();
-};
-
-class SetUserCreatedLoginItemPrefTask : public Task {
- public:
-  virtual void Run();
-};
-
-void DisableLaunchOnStartupTask::Run() {
+void DisableLaunchOnStartupCallback() {
   // Check if Chrome is not a login Item, or is a Login Item but w/o 'hidden'
   // flag - most likely user has modified the setting, don't override it.
   bool is_hidden = false;
@@ -42,7 +28,7 @@ void DisableLaunchOnStartupTask::Run() {
   base::mac::RemoveFromLoginItems();
 }
 
-void EnableLaunchOnStartupTask::Run() {
+void EnableLaunchOnStartupCallback() {
   // Return if Chrome is already a Login Item (avoid overriding user choice).
   if (base::mac::CheckLoginItemStatus(NULL)) {
     // Call back to the UI thread to set our preference so we don't delete the
@@ -51,14 +37,14 @@ void EnableLaunchOnStartupTask::Run() {
     // is run, but the user can manually disable "Open At Login" via the dock if
     // this happens.
     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
-                            new SetUserCreatedLoginItemPrefTask());
+                            base::Bind(SetUserCreatedLoginItemPrefCallback));
     return;
   }
 
   base::mac::AddToLoginItems(true);  // Hide on startup.
 }
 
-void SetUserCreatedLoginItemPrefTask::Run() {
+void SetUserCreatedLoginItemPrefCallback() {
   PrefService* service = g_browser_process->local_state();
   service->SetBoolean(prefs::kUserCreatedLoginItem, true);
 }
@@ -72,7 +58,7 @@ void BackgroundModeManager::EnableLaunchOnStartup(bool should_launch) {
 
   if (should_launch) {
     BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
-                            new EnableLaunchOnStartupTask());
+                            base::Bind(EnableLaunchOnStartupCallback));
   } else {
     PrefService* service = g_browser_process->local_state();
     if (service->GetBoolean(prefs::kUserCreatedLoginItem)) {
@@ -83,7 +69,7 @@ void BackgroundModeManager::EnableLaunchOnStartup(bool should_launch) {
     // Call to the File thread to remove the login item since it requires
     // accessing the disk.
     BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
-                            new DisableLaunchOnStartupTask());
+                            base::Bind(DisableLaunchOnStartupCallback));
   }
 }