Remove the purify directive which should no longer be necessary....

base/message_loop.cc

 // Copyright (c) 2006-2008 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.h"
 
 #include <algorithm>
 
 #include "base/compiler_specific.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
-#include "base/memory_debug.h"
 #include "base/message_pump_default.h"
 #include "base/string_util.h"
 #include "base/thread_local.h"
 
 #if defined(OS_MACOSX)
 #include "base/message_pump_mac.h"
 #endif
 #if defined(OS_POSIX)
 #include "base/message_pump_libevent.h"
 #endif
@@ skipping 78 matching lines @@
     pump_ = base::MessagePumpMac::Create();
 #elif defined(OS_LINUX)
     pump_ = new base::MessagePumpForUI();
 #endif  // OS_LINUX
   } else if (type_ == TYPE_IO) {
     pump_ = new base::MessagePumpLibevent();
   } else {
     pump_ = new base::MessagePumpDefault();
   }
 #endif  // OS_POSIX
-
-  // We override the PURIFY build to disregard any UMRs in delayed_work_queue_.
-  // This avoids an error in pop(), which pushes the |comp| field onto the
-  // stack. The |comp| field is uninitialized, since it is std::less, which is
-  // an empty struct -- VS reserves 1 byte for this struct, which will never
-  // be initialized. See http://crbug.com/5555.
-  base::MemoryDebug::MarkAsInitialized(&delayed_work_queue_,
-                                       sizeof(delayed_work_queue_));
 }
 
 MessageLoop::~MessageLoop() {
   DCHECK(this == current());
 
   // Let interested parties have one last shot at accessing this.
   FOR_EACH_OBSERVER(DestructionObserver, destruction_observers_,
                     WillDestroyCurrentMessageLoop());
 
   DCHECK(!state_);
@@ skipping 480 matching lines @@
                                            Watcher *delegate) {
   return pump_libevent()->WatchFileDescriptor(
       fd,
       persistent,
       static_cast<base::MessagePumpLibevent::Mode>(mode),
       controller,
       delegate);
 }
 
 #endif