Support for registering arbitrary Tasks with AtExitManager.

base/at_exit_unittest.cc

Index: base/at_exit_unittest.cc
===================================================================
--- base/at_exit_unittest.cc	(revision 99168)
+++ base/at_exit_unittest.cc	(working copy)
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "base/at_exit.h"
+#include "base/task.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -77,3 +78,10 @@
                                         &g_test_counter_1);
   base::AtExitManager::ProcessCallbacksNow();
 }
+
+TEST_F(AtExitTest, Task) {
+  ZeroTestCounters();
+  base::AtExitManager::RegisterTask(NewRunnableFunction(ExpectParamIsCounter,
+                                                        &g_test_counter_1));
+  base::AtExitManager::ProcessCallbacksNow();
+}