chromeos: Fix closing issues with WebUI form-repost dialog.

chrome/browser/ui/webui/repost_form_warning_ui.cc

Index: chrome/browser/ui/webui/repost_form_warning_ui.cc
diff --git a/chrome/browser/ui/webui/repost_form_warning_ui.cc b/chrome/browser/ui/webui/repost_form_warning_ui.cc
index d29a2d00a440c3507878df82dba70b8d7e1b1704..652fdcb7e720707f7e9bebb4176fe430cc547fe3 100644
--- a/chrome/browser/ui/webui/repost_form_warning_ui.cc
+++ b/chrome/browser/ui/webui/repost_form_warning_ui.cc
@@ -146,14 +146,18 @@ RepostFormWarningUI::RepostFormWarningUI(gfx::NativeWindow parent_window,
       TabContentsWrapper::GetCurrentWrapperForContents(tab_contents);
   Profile* profile = wrapper->profile();
   RepostFormWarningSource::RegisterDataSource(profile);
-  RepostFormWarningHtmlDelegate* delegate =
+  RepostFormWarningHtmlDelegate* html_delegate =
       new RepostFormWarningHtmlDelegate(this);
-  ConstrainedHtmlUI::CreateConstrainedHtmlDialog(profile, delegate, wrapper);
+  ConstrainedHtmlUIDelegate* dialog_delegate =
+      ConstrainedHtmlUI::CreateConstrainedHtmlDialog(
+          profile, html_delegate, wrapper);
+  controller_->set_window(dialog_delegate->window());
 }
 
 RepostFormWarningUI::~RepostFormWarningUI() {}
 
 void RepostFormWarningUI::OnDialogClosed(bool repost) {
+  controller_->set_window(NULL);
   if (repost)
     controller_->Continue();
   else