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

chrome/browser/ui/webui/print_preview_handler.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_HANDLER_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/shell_dialogs.h"
 #include "content/browser/webui/web_ui.h"
 
 class EnumeratePrintersTaskProxy;
+class FilePath;
 class FundamentalValue;
 
 namespace printing {
 class PrintBackend;
 }
 
 // The handler for Javascript messages related to the "print preview" dialog.
 class PrintPreviewHandler : public WebUIMessageHandler,
                             public base::SupportsWeakPtr<PrintPreviewHandler>,
                             public SelectFileDialog::Listener {
  public:
   PrintPreviewHandler();
   virtual ~PrintPreviewHandler();
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages();
 
   // SelectFileDialog::Listener implementation.
   virtual void FileSelected(const FilePath& path, int index, void* params);
 
   // Displays a modal dialog, prompting the user to select a file.
-  void SelectFile();
+  void SelectFile(const FilePath& default_path);
 
  private:
   friend class EnumeratePrintersTaskProxy;
 
   // Get the list of printers. |args| is unused.
   void HandleGetPrinters(const ListValue* args);
 
   // Ask the initiator renderer to generate a preview.
   // First element of |args| is a job settings JSON string.
   void HandleGetPreview(const ListValue* args);
@@ skipping 20 matching lines @@
 
   // Set to true if the preview should be in color.
   bool color_;
 
   // Set to true if the preview should be landscape.
   bool landscape_;
 
   // The underlying dialog object.
   scoped_refptr<SelectFileDialog> select_file_dialog_;
 
+  static FilePath* last_saved_path_;
+
   DISALLOW_COPY_AND_ASSIGN(PrintPreviewHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_HANDLER_H_