[Offline pages] Moving browser code to android path

chrome/browser/offline_pages/offline_page_mhtml_archiver.cc

-// 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.
-
-#include "chrome/browser/offline_pages/offline_page_mhtml_archiver.h"
-
-#include "base/bind.h"
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/message_loop/message_loop.h"
-#include "base/single_thread_task_runner.h"
-#include "base/strings/utf_string_conversions.h"
-#include "content/public/browser/web_contents.h"
-
-namespace offline_pages {
-
-OfflinePageMHTMLArchiver::OfflinePageMHTMLArchiver(
-    content::WebContents* web_contents,
-    const base::FilePath& file_path,
-    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner)
-    : file_path_(file_path),
-      web_contents_(web_contents),
-      task_runner_(task_runner),
-      weak_ptr_factory_(this) {
-  DCHECK(web_contents_);
-}
-
-OfflinePageMHTMLArchiver::OfflinePageMHTMLArchiver(
-    const base::FilePath& file_path,
-    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner)
-    : file_path_(file_path),
-      web_contents_(nullptr),
-      task_runner_(task_runner),
-      weak_ptr_factory_(this) {
-}
-
-OfflinePageMHTMLArchiver::~OfflinePageMHTMLArchiver() {
-}
-
-void OfflinePageMHTMLArchiver::CreateArchive(
-    const CreateArchiveCallback& callback) {
-  DCHECK(callback_.is_null());
-  DCHECK(!callback.is_null());
-  callback_ = callback;
-
-  if (!IsWebContentsValid()) {
-    DVLOG(1) << "WebContents is invalid. Can't create archive.";
-    ReportFailure(ArchiverResult::ERROR_CONTENT_UNAVAILABLE);
-    return;
-  }
-
-  GenerateMHTML();
-}
-
-bool OfflinePageMHTMLArchiver::IsWebContentsValid() const {
-  // TODO(fgorski): Make sure that web_contents is valid (use WCObserver).
-  return true;
-}
-
-void OfflinePageMHTMLArchiver::GenerateMHTML() {
-  if (!web_contents_) {
-    DVLOG(1) << "WebContents is missing. Can't create archive.";
-    ReportFailure(ArchiverResult::ERROR_CONTENT_UNAVAILABLE);
-    return;
-  }
-  // TODO(fgorski): Figure out if the actual URL or title can be different at
-  // the end of MHTML generation. Perhaps we should pull it out after the MHTML
-  // is generated.
-  web_contents_->GenerateMHTML(
-      file_path_, base::Bind(&OfflinePageMHTMLArchiver::OnGenerateMHTMLDone,
-                             weak_ptr_factory_.GetWeakPtr(),
-                             web_contents_->GetLastCommittedURL(),
-                             web_contents_->GetTitle()));
-}
-
-void OfflinePageMHTMLArchiver::OnGenerateMHTMLDone(const GURL& url,
-                                                   const base::string16& title,
-                                                   int64 file_size) {
-  ArchiverResult result =
-      file_size < 0 ? ArchiverResult::ERROR_ARCHIVE_CREATION_FAILED :
-                      ArchiverResult::SUCCESSFULLY_CREATED;
-  ReportResult(result, url, title, file_size);
-}
-
-void OfflinePageMHTMLArchiver::ReportFailure(ArchiverResult result) {
-  DCHECK(result != ArchiverResult::SUCCESSFULLY_CREATED);
-  ReportResult(result, GURL(), base::string16(), 0);
-}
-
-void OfflinePageMHTMLArchiver::ReportResult(ArchiverResult result,
-                                            const GURL& url,
-                                            const base::string16& title,
-                                            int64 file_size) {
-  base::FilePath file_path;
-  if (result == ArchiverResult::SUCCESSFULLY_CREATED) {
-    // Pass an actual file path and report file size only upon success.
-    file_path = file_path_;
-  } else {
-    // Make sure both file path and file size are empty on failure.
-    file_size = 0;
-  }
-  task_runner_->PostTask(FROM_HERE, base::Bind(
-      callback_, this, result, url, title, file_path, file_size));
-}
-
-}  // namespace offline_pages