importer: Cleanup, remove all remaining using declarations.

chrome/browser/importer/safari_importer.mm

 // Copyright (c) 2011 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/browser/importer/safari_importer.h"
 
 #include <map>
 #include <vector>
@@ skipping 43 matching lines @@
   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.
   FilePath safari_dir = library_dir.Append("Safari");
   FilePath bookmarks_path = safari_dir.Append("Bookmarks.plist");
   FilePath history_path = safari_dir.Append("History.plist");
 
-  using file_util::PathExists;
-  if (PathExists(bookmarks_path))
+  if (file_util::PathExists(bookmarks_path))
     *services_supported |= importer::FAVORITES;
-  if (PathExists(history_path))
+  if (file_util::PathExists(history_path))
     *services_supported |= importer::HISTORY;
 
   return *services_supported != importer::NONE;
 }
 
 void SafariImporter::StartImport(const importer::ProfileInfo& profile_info,
                                  uint16 services_supported,
                                  ImporterBridge* bridge) {
   bridge_ = bridge;
   // The order here is important!
@@ skipping 261 matching lines @@
   // Load the plist file.
   NSDictionary* history_dict = [NSDictionary
       dictionaryWithContentsOfFile:history_plist];
   if (!history_dict)
     return;
 
   NSArray* safari_history_items = [history_dict
       objectForKey:@"WebHistoryDates"];
 
   for (NSDictionary* history_item in safari_history_items) {
-    using base::SysNSStringToUTF8;
-    using base::SysNSStringToUTF16;
     NSString* url_ns = [history_item objectForKey:@""];
     if (!url_ns)
       continue;
 
-    GURL url(SysNSStringToUTF8(url_ns));
+    GURL url(base::SysNSStringToUTF8(url_ns));
 
     if (!CanImportSafariURL(url))
       continue;
 
     history::URLRow row(url);
     NSString* title_ns = [history_item objectForKey:@"title"];
 
     // Sometimes items don't have a title, in which case we just substitue
     // the url.
     if (!title_ns)
       title_ns = url_ns;
 
-    row.set_title(SysNSStringToUTF16(title_ns));
+    row.set_title(base::SysNSStringToUTF16(title_ns));
     int visit_count = [[history_item objectForKey:@"visitCount"]
                           intValue];
     row.set_visit_count(visit_count);
     // Include imported URLs in autocompletion - don't hide them.
     row.set_hidden(0);
     // Item was never typed before in the omnibox.
     row.set_typed_count(0);
 
     NSString* last_visit_str = [history_item objectForKey:@"lastVisitedDate"];
     // The last visit time should always be in the history item, but if not
     /// just continue without this item.
     DCHECK(last_visit_str);
     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.set_last_visit(base::Time::FromDoubleT(seconds_since_unix_epoch));
 
     history_items->push_back(row);
   }
 }