Fix X64 compilation on Windows.

test/cctest/test-bignum-dtoa.cc

-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 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
 //       with the distribution.
@@ skipping 25 matching lines @@
 #include "gay-precision.h"
 #include "gay-shortest.h"
 #include "platform.h"
 
 using namespace v8::internal;
 
 
 // Removes trailing '0' digits.
 // Can return the empty string if all digits are 0.
 static void TrimRepresentation(Vector<char> representation) {
-  int len = strlen(representation.start());
+  int len = StrLength(representation.start());
   int i;
   for (i = len - 1; i >= 0; --i) {
     if (representation[i] != '0') break;
   }
   representation[i + 1] = '\0';
 }
 
 
 static const int kBufferSize = 100;
 
@@ skipping 248 matching lines @@
     double v = current_test.v;
     int number_digits = current_test.number_digits;
     BignumDtoa(v, BIGNUM_DTOA_PRECISION, number_digits,
                buffer, &length, &point);
     CHECK_EQ(current_test.decimal_point, point);
     CHECK_GE(number_digits, length);
     TrimRepresentation(buffer);
     CHECK_EQ(current_test.representation, buffer.start());
   }
 }