SavePackageFilePickerChromeOS should only force MHTML when saving HTML, not when saving text/image/…

chrome/browser/download/save_package_file_picker_chromeos.h

 // 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.
 
 #ifndef CHROME_BROWSER_DOWNLOAD_SAVE_PACKAGE_FILE_PICKER_CHROMEOS_H_
 #define CHROME_BROWSER_DOWNLOAD_SAVE_PACKAGE_FILE_PICKER_CHROMEOS_H_
 
 #include "base/memory/ref_counted.h"
 #include "content/public/browser/download_manager_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "ui/shell_dialogs/select_file_dialog.h"
 
 namespace ui {
 struct SelectedFileInfo;
 }
 
 // Handles showing a dialog to the user to ask for the filename to save a page
 // on ChromeOS.
 class SavePackageFilePickerChromeOS : public ui::SelectFileDialog::Listener,
                                       public content::WebContentsObserver {
  public:
   SavePackageFilePickerChromeOS(
       content::WebContents* web_contents,
       const base::FilePath& suggested_path,
+      bool is_html,
       const content::SavePackagePathPickedCallback& callback);
 
   // Used to disable prompting the user for a directory/filename of the saved
   // web page.  This is available for testing.
   static void SetShouldPromptUser(bool should_prompt);
 
  private:
   virtual ~SavePackageFilePickerChromeOS();
 
   // SelectFileDialog::Listener implementation.
   virtual void FileSelected(const base::FilePath& selected_path,
                             int unused_index,
                             void* unused_params) OVERRIDE;
   virtual void FileSelectedWithExtraInfo(
       const ui::SelectedFileInfo& selected_file_info,
       int unused_index,
       void* unused_params) OVERRIDE;
   virtual void FileSelectionCanceled(void* params) OVERRIDE;
 
   content::SavePackagePathPickedCallback callback_;
+  bool is_html_;
 
   // For managing select file dialogs.
   scoped_refptr<ui::SelectFileDialog> select_file_dialog_;
   base::FilePath selected_path_;
 
   DISALLOW_COPY_AND_ASSIGN(SavePackageFilePickerChromeOS);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_SAVE_PACKAGE_FILE_PICKER_CHROMEOS_H_