Revert 206507 "Move message_pump to base/message_loop."

trunk/src/base/message_loop/message_pump.cc

Index: trunk/src/base/message_loop/message_pump.cc
===================================================================
--- trunk/src/base/message_loop/message_pump.cc	(revision 206508)
+++ trunk/src/base/message_loop/message_pump.cc	(working copy)
@@ -1,15 +0,0 @@
-// 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 "base/message_loop/message_pump.h"
-
-namespace base {
-
-MessagePump::MessagePump() {
-}
-
-MessagePump::~MessagePump() {
-}
-
-}  // namespace base