Adding tracking of HWND creation/destruction

base/win_util.h

 // 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.
 
 #ifndef BASE_WIN_UTIL_H__
 #define BASE_WIN_UTIL_H__
 
 #include <windows.h>
 #include <aclapi.h>
 
 #include <string>
 
+#include "base/tracked.h"
+
 namespace win_util {
 
 // NOTE: Keep these in order so callers can do things like
 // "if (GetWinVersion() > WINVERSION_2000) ...".  It's OK to change the values,
 // though.
 enum WinVersion {
   WINVERSION_PRE_2000 = 0,  // Not supported
   WINVERSION_2000 = 1,
   WINVERSION_XP = 2,
   WINVERSION_SERVER_2003 = 3,
@@ skipping 72 matching lines @@
 // if the OS is Vista.
 bool UserAccountControlIsEnabled();
 
 // Use the Win32 API FormatMessage() function to generate a string, using
 // Windows's default Message Compiled resources; ignoring the inserts.
 std::wstring FormatMessage(unsigned messageid);
 
 // Uses the last Win32 error to generate a human readable message string.
 std::wstring FormatLastWin32Error();
 
+// These 2 methods are used to track HWND creation/destruction to investigate
+// a mysterious crasher http://crbugs.com/4714 (crasher in on NCDestroy) that
+// might be caused by a multiple delete of an HWND.
+void NotifyHWNDCreation(const tracked_objects::Location& from_here, HWND hwnd);
+void NotifyHWNDDestruction(const tracked_objects::Location& from_here,
+                           HWND hwnd);
+
+#ifdef NDEBUG
+#define TRACK_HWND_CREATION(hwnd)
+#define TRACK_HWND_DESTRUCTION(hwnd)
+#else
+#define TRACK_HWND_CREATION(hwnd) win_util::NotifyHWNDCreation(FROM_HERE, hwnd)
+#define TRACK_HWND_DESTRUCTION(hwnd) \
+    win_util::NotifyHWNDDestruction(FROM_HERE, hwnd)
+#endif
+
 }  // namespace win_util
 
 #endif  // BASE_WIN_UTIL_H__