Move string16 and char16 in to base::

minidump/test/minidump_string_writer_test_util.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 71 matching lines @@
                                            RVA rva) {
   return TMinidumpStringAtRVA<MINIDUMP_STRING>(file_contents, rva);
 }
 
 const MinidumpUTF8String* MinidumpUTF8StringAtRVA(
     const std::string& file_contents,
     RVA rva) {
   return TMinidumpStringAtRVA<MinidumpUTF8String>(file_contents, rva);
 }
 
-string16 MinidumpStringAtRVAAsString(const std::string& file_contents,
-                                     RVA rva) {
-  return TMinidumpStringAtRVAAsString<string16, MINIDUMP_STRING>(file_contents,
-                                                                 rva);
+base::string16 MinidumpStringAtRVAAsString(const std::string& file_contents,
+                                           RVA rva) {
+  return TMinidumpStringAtRVAAsString<base::string16, MINIDUMP_STRING>(
+      file_contents, rva);
 }
 
 std::string MinidumpUTF8StringAtRVAAsString(const std::string& file_contents,
                                             RVA rva) {
   return TMinidumpStringAtRVAAsString<std::string, MinidumpUTF8String>(
       file_contents, rva);
 }
 
 }  // namespace test
 }  // namespace crashpad