diff --git a/base/task.cc b/base/task.cc
index 38ac086..baf4e0f 100644
--- a/base/task.cc
+++ b/base/task.cc
@@ -1,15 +1,9 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 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.
 
 #include "base/task.h"
 
-Task::Task() {
-}
-
-Task::~Task() {
-}
-
 namespace base {
 
 ScopedClosureRunner::ScopedClosureRunner(const Closure& closure)
@@ -27,33 +21,4 @@
   return result;
 }
 
-namespace subtle {
-
-TaskClosureAdapter::TaskClosureAdapter(Task* task)
-    : task_(task),
-      should_leak_task_(&kTaskLeakingDefault) {
-}
-
-TaskClosureAdapter::TaskClosureAdapter(Task* task, bool* should_leak_task)
-    : task_(task),
-      should_leak_task_(should_leak_task) {
-}
-
-TaskClosureAdapter::~TaskClosureAdapter() {
-  if (!*should_leak_task_) {
-    delete task_;
-  }
-}
-
-void TaskClosureAdapter::Run() {
-  task_->Run();
-  delete task_;
-  task_ = NULL;
-}
-
-// Don't leak tasks by default.
-bool TaskClosureAdapter::kTaskLeakingDefault = false;
-
-}  // namespace subtle
-
 }  // namespace base