move SafariImporter::CanImport to common

chrome/utility/importer/safari_importer.mm

 // 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.
 
 #include <Cocoa/Cocoa.h>
 
 #include "chrome/utility/importer/safari_importer.h"
 
 #include <map>
 #include <vector>
@@ skipping 30 matching lines @@
 
 }  // namespace
 
 SafariImporter::SafariImporter(const base::FilePath& library_dir)
     : library_dir_(library_dir) {
 }
 
 SafariImporter::~SafariImporter() {
 }
 
-// static
-bool SafariImporter::CanImport(const base::FilePath& library_dir,
-                               uint16* services_supported) {
-  DCHECK(services_supported);
-  *services_supported = importer::NONE;
-
-  // Import features are toggled by the following:
-  // bookmarks import: existence of ~/Library/Safari/Bookmarks.plist file.
-  // history import: existence of ~/Library/Safari/History.plist file.
-  base::FilePath safari_dir = library_dir.Append("Safari");
-  base::FilePath bookmarks_path = safari_dir.Append("Bookmarks.plist");
-  base::FilePath history_path = safari_dir.Append("History.plist");
-
-  if (base::PathExists(bookmarks_path))
-    *services_supported |= importer::FAVORITES;
-  if (base::PathExists(history_path))
-    *services_supported |= importer::HISTORY;
-
-  return *services_supported != importer::NONE;
-}
-
 void SafariImporter::StartImport(const importer::SourceProfile& source_profile,
                                  uint16 items,
                                  ImporterBridge* bridge) {
   bridge_ = bridge;
   // The order here is important!
   bridge_->NotifyStarted();
 
   // In keeping with import on other platforms (and for other browsers), we
   // don't import the home page (since it may lead to a useless homepage); see
   // crbug.com/25603.
@@ skipping 308 matching lines @@
     if (!last_visit_str)
       continue;
 
     // Convert Safari's last visit time to Unix Epoch time.
     double seconds_since_unix_epoch = HistoryTimeToEpochTime(last_visit_str);
     row.last_visit = base::Time::FromDoubleT(seconds_since_unix_epoch);
 
     history_items->push_back(row);
   }
 }