Adding tracking of HWND creation/destruction

webkit/tools/test_shell/webwidget_host_win.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 "webkit/tools/test_shell/webwidget_host.h"
 
 #include "base/gfx/rect.h"
 #include "base/logging.h"
 #include "base/win_util.h"
 #include "skia/ext/platform_canvas.h"
@@ skipping 18 matching lines @@
     wcex.hCursor       = LoadCursor(NULL, IDC_ARROW);
     wcex.lpszClassName = kWindowClassName;
     RegisterClassEx(&wcex);
     registered_class = true;
   }
 
   host->view_ = CreateWindowEx(WS_EX_TOOLWINDOW,
                                kWindowClassName, kWindowClassName, WS_POPUP,
                                0, 0, 0, 0,
                                parent_window, NULL, GetModuleHandle(NULL), NULL);
-
+  TRACK_HWND_CREATION(host->view_);
   win_util::SetWindowUserData(host->view_, host);
 
   host->webwidget_ = WebWidget::Create(delegate);
 
   return host;
 }
 
 /*static*/
 WebWidgetHost* WebWidgetHost::FromWindow(gfx::NativeWindow hwnd) {
   return reinterpret_cast<WebWidgetHost*>(win_util::GetWindowUserData(hwnd));
 }
 
 /*static*/
 LRESULT CALLBACK WebWidgetHost::WndProc(HWND hwnd, UINT message, WPARAM wparam,
                                         LPARAM lparam) {
   WebWidgetHost* host = FromWindow(hwnd);
   if (host && !host->WndProc(message, wparam, lparam)) {
     switch (message) {
       case WM_DESTROY:
         delete host;
         break;
+      case WM_NCDESTROY:
+        TRACK_HWND_DESTRUCTION(hwnd);
+        break;
 
       case WM_PAINT: {
         RECT rect;
         if (GetUpdateRect(hwnd, &rect, FALSE)) {
           host->UpdatePaintRect(gfx::Rect(rect));
         }
         host->Paint();
         return 0;
       }
 
@@ skipping 268 matching lines @@
 void WebWidgetHost::PaintRect(const gfx::Rect& rect) {
 #ifndef NDEBUG
   DCHECK(!painting_);
 #endif
   DCHECK(canvas_.get());
 
   set_painting(true);
   webwidget_->Paint(canvas_.get(), rect);
   set_painting(false);
 }