Fix warnings on Win64.

test/cctest/test-regexp.cc

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 56 matching lines @@
   CHECK(v8::internal::ParseRegExp(&reader, false, &result));
   CHECK(result.tree != NULL);
   CHECK(result.error.is_null());
   SmartPointer<const char> output = result.tree->ToString();
   return output;
 }
 
 static bool CheckSimple(const char* input) {
   V8::Initialize(NULL);
   v8::HandleScope scope;
-  unibrow::Utf8InputBuffer<> buffer(input, strlen(input));
+  unibrow::Utf8InputBuffer<> buffer(input, StrLength(input));
   ZoneScope zone_scope(DELETE_ON_EXIT);
   FlatStringReader reader(CStrVector(input));
   RegExpCompileData result;
   CHECK(v8::internal::ParseRegExp(&reader, false, &result));
   CHECK(result.tree != NULL);
   CHECK(result.error.is_null());
   return result.simple;
 }
 
 struct MinMaxPair {
   int min_match;
   int max_match;
 };
 
 static MinMaxPair CheckMinMaxMatch(const char* input) {
   V8::Initialize(NULL);
   v8::HandleScope scope;
-  unibrow::Utf8InputBuffer<> buffer(input, strlen(input));
+  unibrow::Utf8InputBuffer<> buffer(input, StrLength(input));
   ZoneScope zone_scope(DELETE_ON_EXIT);
   FlatStringReader reader(CStrVector(input));
   RegExpCompileData result;
   CHECK(v8::internal::ParseRegExp(&reader, false, &result));
   CHECK(result.tree != NULL);
   CHECK(result.error.is_null());
   int min_match = result.tree->min_match();
   int max_match = result.tree->max_match();
   MinMaxPair pair = { min_match, max_match };
   return pair;
@@ skipping 1441 matching lines @@
       CHECK(!InClass(i, excluded));
     }
   }
 }
 
 
 TEST(Graph) {
   V8::Initialize(NULL);
   Execute("(?:(?:x(.))?\1)+$", false, true, true);
 }