Use base namespace for string16 in components and cloud_print.

components/autofill/core/common/form_field_data.cc

 // Copyright 2013 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 "components/autofill/core/common/form_field_data.h"
 
 #include "base/pickle.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 
 namespace {
 
 const int kPickleVersion = 1;
 
 void AddVectorToPickle(std::vector<base::string16> strings,
                        Pickle* pickle) {
   pickle->WriteInt(static_cast<int>(strings.size()));
   for (size_t i = 0; i < strings.size(); ++i) {
     pickle->WriteString16(strings[i]);
   }
 }
 
 bool ReadStringVector(PickleIterator* iter,
                       std::vector<base::string16>* strings) {
   int size;
   if (!iter->ReadInt(&size))
     return false;
 
-  string16 pickle_data;
+  base::string16 pickle_data;
   for (int i = 0; i < size; i++) {
     if (!iter->ReadString16(&pickle_data))
       return false;
 
     strings->push_back(pickle_data);
   }
   return true;
 }
 
 bool ReadTextDirection(PickleIterator* iter,
@@ skipping 130 matching lines @@
       << (field.is_checkable ? "true" : "false")
       << " "
       << (field.is_focusable ? "true" : "false")
       << " "
       << (field.should_autocomplete ? "true" : "false")
       << " "
       << field.text_direction;
 }
 
 }  // namespace autofill