Add explicit base namespace to string16 users.

chrome/common/net/url_fixer_upper.h

 // 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.
 
 #ifndef CHROME_COMMON_NET_URL_FIXER_UPPER_H_
 #define CHROME_COMMON_NET_URL_FIXER_UPPER_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
@@ skipping 13 matching lines @@
 // options. This is NOT the place for converting between different types of
 // URLs or parsing them, see net_util.h for that.
 namespace URLFixerUpper {
 
   // Segments the given text string into parts of a URL.  This is most useful
   // for schemes such as http, https, and ftp where |SegmentURL| will find many
   // segments.  Currently does not segment "file" schemes.
   // Returns the canonicalized scheme, or the empty string when |text| is only
   // whitespace.
   std::string SegmentURL(const std::string& text, url_parse::Parsed* parts);
-  string16 SegmentURL(const string16& text, url_parse::Parsed* parts);
+  base::string16 SegmentURL(const base::string16& text,
+                            url_parse::Parsed* parts);
 
   // Converts |text| to a fixed-up URL and returns it. Attempts to make
   // some "smart" adjustments to obviously-invalid input where possible.
   // |text| may be an absolute path to a file, which will get converted to a
   // "file:" URL.
   //
   // The result will be a "more" valid URL than the input. It may still not
   // be valid, so check the return value's validity or use
   // possibly_invalid_spec().
   //
@@ skipping 31 matching lines @@
   void OffsetComponent(int offset, url_parse::Component* part);
 
   // For paths like ~, we use $HOME for the current user's home
   // directory.  For tests, we allow our idea of $HOME to be overriden
   // by this variable.
   extern const char* home_directory_override;
 
 }  // namespace URLFixerUpper
 
 #endif  // CHROME_COMMON_NET_URL_FIXER_UPPER_H_