Fix purify MLK errors resulting from my previous check-in. The TimerManager...

base/message_loop.cc

Index: base/message_loop.cc
===================================================================
--- base/message_loop.cc	(revision 1825)
+++ base/message_loop.cc	(working copy)
@@ -113,6 +113,13 @@
   ReloadWorkQueue();
   DeletePendingTasks();
 
+  // Delete tasks in the delayed work queue.
+  while (!delayed_work_queue_.empty()) {
+    Task* task = delayed_work_queue_.top().task;
+    delayed_work_queue_.pop();
+    delete task;
+  }
+
 #if defined(OS_WIN)
   // Match timeBeginPeriod() from construction.
   timeEndPeriod(1);