Extract BookmarksFileImporter from Firefox2Importer.

chrome/browser/importer/bookmarks_file_importer.cc

+// Copyright 2013 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/importer/bookmarks_file_importer.h"
+
+#include "base/bind.h"
+#include "chrome/browser/bookmarks/bookmark_html_reader.h"
+#include "chrome/browser/bookmarks/imported_bookmark_entry.h"
+#include "chrome/browser/favicon/imported_favicon_usage.h"
+#include "chrome/browser/importer/firefox_importer_utils.h"
+#include "chrome/browser/importer/importer_bridge.h"
+#include "chrome/browser/importer/importer_data_types.h"
+#include "grit/generated_resources.h"
+
+namespace {
+
+bool IsImporterCancelled(BookmarksFileImporter* importer) {
+  return importer->cancelled();
+}
+
+}  // namespace
+
+BookmarksFileImporter::BookmarksFileImporter() {}
+
+BookmarksFileImporter::~BookmarksFileImporter() {}
+
+void BookmarksFileImporter::StartImport(
+    const importer::SourceProfile& source_profile,
+    uint16 items,
+    ImporterBridge* bridge) {
+  // The only thing this importer can import is a bookmarks file, aka
+  // "favorites".
+  DCHECK_EQ(importer::FAVORITES, items);
+
+  bridge->NotifyStarted();
+  bridge->NotifyItemStarted(importer::FAVORITES);
+
+  std::vector<ImportedBookmarkEntry> bookmarks;
+  std::vector<ImportedFaviconUsage> favicons;
+  base::Callback<bool(void)> cancellation_callback =
+      base::Bind(IsImporterCancelled, base::Unretained(this));
+  base::Callback<bool(const GURL&)> valid_url_callback =
+      base::Bind(CanImportURL);
+
+  bookmark_html_reader::ImportBookmarksFile(&cancellation_callback,
+                                            &valid_url_callback,
+                                            source_profile.source_path,
+                                            &bookmarks,
+                                            &favicons);
+
+  if (!bookmarks.empty() && !cancelled()) {
+    base::string16 first_folder_name =
+        bridge->GetLocalizedString(IDS_BOOKMARK_GROUP);
+    bridge->AddBookmarks(bookmarks, first_folder_name);
+  }
+  if (!favicons.empty())
+    bridge->SetFavicons(favicons);
+
+  bridge->NotifyItemEnded(importer::FAVORITES);
+  bridge->NotifyEnded();
+}