Fix warnings on Win64.

test/cctest/test-strings.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 
 // Check that we can traverse very deep stacks of ConsStrings using
 // StringInputBuffer.  Check that Get(int) works on very deep stacks
 // of ConsStrings.  These operations may not be very fast, but they
 // should be possible without getting errors due to too deep recursion.
 
 #include <stdlib.h>
 
 #include "v8.h"
@@ skipping 274 matching lines @@
   DeleteArray<char>(foo);
 }
 
 
 TEST(Utf8Conversion) {
   // Smoke test for converting strings to utf-8.
   InitializeVM();
   v8::HandleScope handle_scope;
   // A simple ascii string
   const char* ascii_string = "abcdef12345";
-  int len = v8::String::New(ascii_string, strlen(ascii_string))->Utf8Length();
-  CHECK_EQ(strlen(ascii_string), len);
+  int len =
+      v8::String::New(ascii_string,
+                      StrLength(ascii_string))->Utf8Length();
+  CHECK_EQ(StrLength(ascii_string), len);
   // A mixed ascii and non-ascii string
   // U+02E4 -> CB A4
   // U+0064 -> 64
   // U+12E4 -> E1 8B A4
   // U+0030 -> 30
   // U+3045 -> E3 81 85
   const uint16_t mixed_string[] = {0x02E4, 0x0064, 0x12E4, 0x0030, 0x3045};
   // The characters we expect to be output
   const unsigned char as_utf8[11] = {0xCB, 0xA4, 0x64, 0xE1, 0x8B, 0xA4, 0x30,
       0xE3, 0x81, 0x85, 0x00};
@@ skipping 35 matching lines @@
   }
 
   const uint16_t* data() const { return data_; }
   size_t length() const { return length_; }
 
  private:
   const uint16_t* data_;
   size_t length_;
   bool* destructed_;
 };