Convert ARRAYSIZE_UNSAFE -> arraysize in content/.

content/shell/renderer/test_runner/mock_grammar_check.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 "content/shell/renderer/test_runner/mock_grammar_check.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "content/shell/renderer/test_runner/test_common.h"
@@ skipping 26 matching lines @@
         {"I have an muscat.", 7, 2},
         {"You has the right.", 4, 3},
         {"apple orange zz.", 0, 16},
         {"apple zz orange.", 0, 16},
         {"apple,zz,orange.", 0, 16},
         {"orange,zz,apple.", 0, 16},
         {"the the adlj adaasj sdklj. there there", 4, 3},
         {"the the adlj adaasj sdklj. there there", 33, 5},
         {"zz apple orange.", 0, 16},
     };
-  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kGrammarErrors); ++i) {
+  for (size_t i = 0; i < arraysize(kGrammarErrors); ++i) {
     size_t offset = 0;
     base::string16 error(
         kGrammarErrors[i].text,
         kGrammarErrors[i].text + strlen(kGrammarErrors[i].text));
     while ((offset = string_text.find(error, offset)) != base::string16::npos) {
       results->push_back(
           blink::WebTextCheckingResult(blink::WebTextDecorationTypeGrammar,
                                        offset + kGrammarErrors[i].location,
                                        kGrammarErrors[i].length));
       offset += kGrammarErrors[i].length;
     }
   }
   return false;
 }
 
 }  // namespace content