[Offline pages] Moving browser code to android path

chrome/browser/offline_pages/offline_page_mhtml_archiver.h

-// Copyright 2015 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_OFFLINE_PAGES_OFFLINE_PAGE_MHTML_ARCHIVER_H_
-#define CHROME_BROWSER_OFFLINE_PAGES_OFFLINE_PAGE_MHTML_ARCHIVER_H_
-
-#include <map>
-
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "components/offline_pages/offline_page_archiver.h"
-
-namespace base {
-class FilePath;
-class SingleThreadTaskRunner;
-}  // namespace base
-
-namespace content {
-class WebContents;
-}  // namespace content
-
-namespace offline_pages {
-class TestMHTMLArchiver;
-
-// Class implementing an offline page archiver using MHTML as an archive format.
-//
-// To generate an MHTML archiver for a given URL, a WebContents instance should
-// have that URL loaded.
-//
-// Example:
-//   void SavePageOffline(content::WebContents* web_contents) {
-//     const GURL& url = web_contents->GetLastCommittedURL();
-//     scoped_ptr<OfflinePageMHTMLArchiver> archiver(
-//         new OfflinePageMHTMLArchiver(
-//             web_contents, archiver_dir, task_runner));
-//     // Callback is of type OfflinePageModel::SavePageCallback.
-//     model->SavePage(url, archiver.Pass(), callback);
-//   }
-class OfflinePageMHTMLArchiver : public OfflinePageArchiver {
- public:
-  OfflinePageMHTMLArchiver(
-      content::WebContents* web_contents,
-      const base::FilePath& file_path,
-      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
-  ~OfflinePageMHTMLArchiver() override;
-
-  // OfflinePageArchiver implementation:
-  void CreateArchive(const CreateArchiveCallback& callback) override;
-
- private:
-  friend class offline_pages::TestMHTMLArchiver;
-
-  // Allows to overload the archiver for testing.
-  OfflinePageMHTMLArchiver(
-      const base::FilePath& file_path,
-      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
-
-  // Sends the result of archiving a page to the client that requested archive
-  // creation.
-  void ReportResult(ArchiverResult result,
-                    const GURL& url,
-                    const base::string16& title,
-                    int64 file_size);
-  void ReportFailure(ArchiverResult result);
-
-  // Checks that |web_contents_| is still valid.
-  virtual bool IsWebContentsValid() const;
-  // Actual call to generate MHTML.
-  virtual void GenerateMHTML();
-  // Callback for Generating MHTML.
-  void OnGenerateMHTMLDone(const GURL& url,
-                           const base::string16& title,
-                           int64 file_size);
-
-  // Path to the archive file.
-  const base::FilePath file_path_;
-  // Contents of the web page to be serialized. Not owned.
-  // TODO(fgorski): Add WebContentsObserver to know when the page navigates away
-  // or shuts down.
-  content::WebContents* web_contents_;
-
-  CreateArchiveCallback callback_;
-
-  // Task runner, which will be used to post the callback.
-  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
-
-  base::WeakPtrFactory<OfflinePageMHTMLArchiver> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(OfflinePageMHTMLArchiver);
-};
-
-}  // namespace offline_pages
-
-#endif  // CHROME_BROWSER_OFFLINE_PAGES_OFFLINE_PAGE_MHTML_ARCHIVER_H_