Updated to latest double-conversion library version.

runtime/third_party/double-conversion/src/double-conversion.cc

 // Copyright 2010 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 586 matching lines @@
   const int kBufferSize = kMaxSignificantDigits + 10;
   char buffer[kBufferSize];  // NOLINT: size is known at compile time.
   int buffer_pos = 0;
 
   // Exponent will be adjusted if insignificant digits of the integer part
   // or insignificant leading zeros of the fractional part are dropped.
   int exponent = 0;
   int significant_digits = 0;
   int insignificant_digits = 0;
   bool nonzero_digit_dropped = false;
-  bool fractional_part = false;
 
   bool sign = false;
 
   if (*current == '+' || *current == '-') {
     sign = (*current == '-');
     ++current;
     const char* next_non_space = current;
     // Skip following spaces (if allowed).
     if (!AdvanceToNonspace(&next_non_space, end)) return junk_string_value_;
     if (!allow_spaces_after_sign && (current != next_non_space)) {
@@ skipping 123 matching lines @@
       while (*current == '0') {
         ++current;
         if (current == end) {
           *processed_characters_count = current - input;
           return SignedZero(sign);
         }
         exponent--;  // Move this 0 into the exponent.
       }
     }
 
+    // There is a fractional part.
     // We don't emit a '.', but adjust the exponent instead.
-    fractional_part = true;
-
-    // There is a fractional part.
     while (*current >= '0' && *current <= '9') {
       if (significant_digits < kMaxSignificantDigits) {
         ASSERT(buffer_pos < kBufferSize);
         buffer[buffer_pos++] = static_cast<char>(*current);
         significant_digits++;
         exponent--;
       } else {
         // Ignore insignificant digits in the fractional part.
         nonzero_digit_dropped = nonzero_digit_dropped || *current != '0';
       }
@@ skipping 95 matching lines @@
 
   ASSERT(buffer_pos < kBufferSize);
   buffer[buffer_pos] = '\0';
 
   double converted = Strtod(Vector<const char>(buffer, buffer_pos), exponent);
   *processed_characters_count = current - input;
   return sign? -converted: converted;
 }
 
 }  // namespace double_conversion