GData save package support with MHTML.

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_
+#pragma once
+
+#include "base/platform_file.h"
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/ui/select_file_dialog.h"
+#include "content/public/browser/web_contents_observer.h"
+
+namespace gdata {
+class GDataFileSystem;
+}
+
+// Handles showing a dialog to the user to ask for the filename to save a page
+// on ChromeOS.
+class SavePackageFilePickerChromeOS : public SelectFileDialog::Listener,
+                                      public content::WebContentsObserver {
+ public:
+  SavePackageFilePickerChromeOS(content::WebContents* web_contents,
+                                const FilePath& suggested_path);
+
+ private:
+  virtual ~SavePackageFilePickerChromeOS();
+
+  // SelectFileDialog::Listener implementation.
+  virtual void FileSelected(const FilePath& path,
+                            int index,
+                            void* params) OVERRIDE;
+  virtual void FileSelectionCanceled(void* params) OVERRIDE;
+
+  // Calls WebContent::GenerateMHTML.
+  void GenerateMHTML(const FilePath* mhtml_path);
+
+  // Callback for WebContents::GenerateMHTML.
+  void OnMHTMLGenerated(const FilePath& file_path, int64 file_size);
+
+  // GDataFileSystem::TransferFile callback.
+  void OnTransferFile(base::PlatformFileError error);
+
+  // Use web_contents() to get at GDataFileSystem.
+  gdata::GDataFileSystem* GetGDataFileSystem();
+
+  // For managing select file dialogs.
+  scoped_refptr<SelectFileDialog> select_file_dialog_;
+  FilePath selected_path_;
+
+  DISALLOW_COPY_AND_ASSIGN(SavePackageFilePickerChromeOS);
+};
+
+#endif  // CHROME_BROWSER_DOWNLOAD_SAVE_PACKAGE_FILE_PICKER_CHROMEOS_H_