Update some uses of char16 to use the base:: namespace.

chrome/browser/autocomplete/autocomplete_input.cc

 // 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 "chrome/browser/autocomplete/autocomplete_input.h"
 
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/external_protocol/external_protocol_handler.h"
 #include "chrome/browser/profiles/profile_io_data.h"
@@ skipping 456 matching lines @@
     *host = parts.inner_parsed()->host;
   }
 }
 
 // static
 base::string16 AutocompleteInput::FormattedStringWithEquivalentMeaning(
     const GURL& url,
     const base::string16& formatted_url) {
   if (!net::CanStripTrailingSlash(url))
     return formatted_url;
-  const base::string16 url_with_path(formatted_url + char16('/'));
+  const base::string16 url_with_path(formatted_url + base::char16('/'));
   return (AutocompleteInput::Parse(formatted_url, base::string16(), NULL, NULL,
                                    NULL) ==
           AutocompleteInput::Parse(url_with_path, base::string16(), NULL, NULL,
                                    NULL)) ?
       formatted_url : url_with_path;
 }
 
 // static
 int AutocompleteInput::NumNonHostComponents(const url_parse::Parsed& parts) {
   int num_nonhost_components = 0;
@@ skipping 42 matching lines @@
   current_page_classification_ = AutocompleteInput::INVALID_SPEC;
   type_ = INVALID;
   parts_ = url_parse::Parsed();
   scheme_.clear();
   canonicalized_url_ = GURL();
   prevent_inline_autocomplete_ = false;
   prefer_keyword_ = false;
   allow_exact_keyword_match_ = false;
   matches_requested_ = ALL_MATCHES;
 }