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

chrome/renderer/spellchecker/spellcheck_worditerator.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.
 
 // Implements a custom word iterator used for our spellchecker.
 
 #include "chrome/renderer/spellchecker/spellcheck_worditerator.h"
 
 #include <map>
 #include <string>
@@ skipping 321 matching lines @@
   // this iterator.
   attribute_ = attribute;
   return true;
 }
 
 bool SpellcheckWordIterator::IsInitialized() const {
   // Return true if we have an ICU custom iterator.
   return !!iterator_;
 }
 
-bool SpellcheckWordIterator::SetText(const char16* text, size_t length) {
+bool SpellcheckWordIterator::SetText(const base::char16* text, size_t length) {
   DCHECK(!!iterator_);
 
   // Set the text to be split by this iterator.
   UErrorCode status = U_ZERO_ERROR;
   ubrk_setText(iterator_, text, length, &status);
   if (U_FAILURE(status))
     return false;
 
   // Retrieve the position to the first word in this text. We return false if
   // this text does not have any words. (For example, The input text consists
@@ skipping 69 matching lines @@
   if (status != U_ZERO_ERROR && status != U_STRING_NOT_TERMINATED_WARNING)
     return false;
 
   // Copy the normalized text to the output.
   icu::StringCharacterIterator it(output);
   for (UChar c = it.first(); c != icu::CharacterIterator::DONE; c = it.next())
     attribute_->OutputChar(c, output_string);
 
   return !output_string->empty();
 }