Cleanup: Remove more uses of deprecated PrintPreviewDialogController methods.

chrome/browser/ui/webui/print_preview/print_preview_handler.cc

 // Copyright (c) 2012 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/print_preview_handler.h"
 
 #include <ctype.h>
 
 #include <string>
 
@@ skipping 454 matching lines @@
     ReportPageCount(page_count, "PrintToPrinter");
     ReportUserActionHistogram(PRINT_TO_PRINTER);
     ReportPrintSettingsStats(*settings);
 
     // This tries to activate the initiator tab as well, so do not clear the
     // association with the initiator tab yet.
     PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
         web_ui()->GetController());
     print_preview_ui->OnHidePreviewDialog();
 
-    // Do this so the initiator tab can open a new print preview dialog.
+    // Do this so the initiator tab can open a new print preview dialog, while
+    // the current print preview dialog is still handling its print job.
     ClearInitiatorTabDetails();
 
     // The PDF being printed contains only the pages that the user selected,
     // so ignore the page range and print all pages.
     settings->Remove(printing::kSettingPageRange, NULL);
     // Set ID to know whether printing is for preview.
     settings->SetInteger(printing::kPreviewUIID,
                          print_preview_ui->GetIDForPrintPreviewUI());
     RenderViewHost* rvh = preview_web_contents()->GetRenderViewHost();
     rvh->Send(new PrintMsg_PrintForPrintPreview(rvh->GetRoutingID(),
@@ skipping 486 matching lines @@
     // Nothing to print, no preview available.
     return false;
   }
   DCHECK(tmp_data->size() && tmp_data->front());
 
   *data = tmp_data;
   *title = print_preview_ui->initiator_tab_title();
   return true;
 }