Prepopulating "Print To PDF" select file dialog with a suggested filename and path.

chrome/browser/printing/print_preview_message_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/printing/print_preview_message_handler.h"
 
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/printing/print_job_manager.h"
 #include "chrome/browser/printing/print_preview_tab_controller.h"
 #include "chrome/browser/printing/print_view_manager.h"
@@ skipping 62 matching lines @@
 
   TabContentsWrapper* wrapper =
       TabContentsWrapper::GetCurrentWrapperForContents(print_preview_tab);
   wrapper->print_view_manager()->OverrideTitle(tab_contents());
 
   PrintPreviewUI* print_preview_ui =
       static_cast<PrintPreviewUI*>(print_preview_tab->web_ui());
   PrintPreviewUIHTMLSource* html_source = print_preview_ui->html_source();
   html_source->SetPrintPreviewData(
       std::make_pair(shared_buf, params.data_size));
-  print_preview_ui->PreviewDataIsAvailable(params.expected_pages_count,
-                                           tab_contents()->GetTitle());
+  print_preview_ui->PreviewDataIsAvailable(
+      params.expected_pages_count,
+      wrapper->print_view_manager()->RenderSourceName());
 }
 
 void PrintPreviewMessageHandler::OnPrintPreviewNodeUnderContextMenu() {
   PrintPreviewTabController::PrintPreview(tab_contents());
 }
 
 void PrintPreviewMessageHandler::OnScriptInitiatedPrintPreview() {
   PrintPreviewTabController::PrintPreview(tab_contents());
 }
 
@@ skipping 13 matching lines @@
 }
 
 void PrintPreviewMessageHandler::DidStartLoading() {
   if (tab_contents()->delegate() &&
       printing::PrintPreviewTabController::IsPrintPreviewTab(tab_contents())) {
     tab_contents()->SetContentRestrictions(CONTENT_RESTRICTION_PRINT);
   }
 }
 
 }  // namespace printing