Check for hung plugin windows before detaching them...

chrome/browser/tab_contents/web_contents_view_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 "chrome/browser/tab_contents/web_contents_view_win.h"
 
 #include <windows.h>
 
 #include "chrome/browser/bookmarks/bookmark_drag_data.h"
 #include "chrome/browser/browser.h" // TODO(beng): this dependency is awful.
@@ skipping 15 matching lines @@
 #include "chrome/common/os_exchange_data.h"
 #include "net/base/net_util.h"
 #include "webkit/glue/plugins/webplugin_delegate_impl.h"
 #include "webkit/glue/webdropdata.h"
 #include "webkit/glue/webinputevent.h"
 
 namespace {
 
 // Windows callback for OnDestroy to detach the plugin windows.
 BOOL CALLBACK DetachPluginWindowsCallback(HWND window, LPARAM param) {
-  if (WebPluginDelegateImpl::IsPluginDelegateWindow(window)) {
+  if (WebPluginDelegateImpl::IsPluginDelegateWindow(window) &&
+      !IsHungAppWindow(window)) {
     ::ShowWindow(window, SW_HIDE);
     SetParent(window, NULL);
   }
   return TRUE;
 }
 
 }  // namespace
 
 // static
 WebContentsView* WebContentsView::Create(WebContents* web_contents) {
@@ skipping 624 matching lines @@
   }
   return false;
 }
 
 void WebContentsViewWin::WheelZoom(int distance) {
   if (web_contents_->delegate()) {
     bool zoom_in = distance > 0;
     web_contents_->delegate()->ContentsZoomChange(zoom_in);
   }
 }