Be able to print items that do window.print(); window.close() (airline tix e.g.)

chrome/browser/ui/webui/print_preview_handler.cc

 // Copyright (c) 2011 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/ui/webui/print_preview_handler.h"
 
 #include <string>
 
 #include "base/base64.h"
 #if !defined(OS_CHROMEOS)
@@ skipping 912 matching lines @@
 }
 
 void PrintPreviewHandler::FileSelectionCanceled(void* params) {
   PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(web_ui_);
   print_preview_ui->OnFileSelectionCancelled();
 }
 
 void PrintPreviewHandler::HidePreviewTab() {
   TabContentsWrapper* preview_tab_wrapper =
       TabContentsWrapper::GetCurrentWrapperForContents(preview_tab());
-  if (GetBackgroundPrintingManager()->HasTabContents(preview_tab_wrapper))
+  if (GetBackgroundPrintingManager()->HasPreviewTabContents(
+          preview_tab_wrapper))
     return;
-  GetBackgroundPrintingManager()->OwnTabContents(preview_tab_wrapper);
+
+  GetBackgroundPrintingManager()->OwnPreviewTabContents(preview_tab_wrapper);
 }
 
 void PrintPreviewHandler::ClearInitiatorTabDetails() {
   TabContents* initiator_tab = GetInitiatorTab();
   if (!initiator_tab)
     return;
 
   // We no longer require the initiator tab details. Remove those details
   // associated with the preview tab to allow the initiator tab to create
   // another preview tab.
   printing::PrintPreviewTabController* tab_controller =
      printing::PrintPreviewTabController::GetInstance();
-  if (tab_controller)
+  if (tab_controller) {
+    TabContentsWrapper* initiator_wrapper =
+        TabContentsWrapper::GetCurrentWrapperForContents(initiator_tab);
     tab_controller->EraseInitiatorTabInfo(preview_tab());
+    GetBackgroundPrintingManager()->ReleaseInitiatorTabContents(
+        initiator_wrapper);
+  }
 }