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

chrome/renderer/spellchecker/spellcheck_provider.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/renderer/spellchecker/spellcheck_provider.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/spellcheck_marker.h"
@@ skipping 223 matching lines @@
 
   // Cache the request and the converted results.
   last_request_ = line;
   last_results_.swap(textcheck_results);
 }
 #endif
 
 bool SpellCheckProvider::HasWordCharacters(
     const base::string16& text,
     int index) const {
-  const char16* data = text.data();
+  const base::char16* data = text.data();
   int length = text.length();
   while (index < length) {
     uint32 code = 0;
     U16_NEXT(data, index, length, code);
     UErrorCode error = U_ZERO_ERROR;
     if (uscript_getScript(code, &error) != USCRIPT_COMMON)
       return true;
   }
   return false;
 }
@@ skipping 96 matching lines @@
         results[i].length = last_results_[i].length;
         results[i].replacement = last_results_[i].replacement;
       }
       completion->didFinishCheckingText(results);
       return true;
     }
   }
 
   return false;
 }