Use locale insensitive method to parse double literals.

runtime/lib/double.cc

Index: runtime/lib/double.cc
diff --git a/runtime/lib/double.cc b/runtime/lib/double.cc
index 3fc2261b843032288b3fd21b80eb455fe6692767..37968776877068fad7fb56e5ad2f87f4eac579d5 100644
--- a/runtime/lib/double.cc
+++ b/runtime/lib/double.cc
@@ -221,9 +221,8 @@ DEFINE_NATIVE_ENTRY(Double_parse, 1) {
           }
         }
         if (dot_ok) {
-          char* p_end = NULL;
-          const double double_value = strtod(cstr, &p_end);
-          if (p_end == (cstr + len)) {
+          double double_value;
+          if (StringToDouble(cstr, len, &double_value)) {
             return Double::New(double_value);
           }
         }
@@ -238,10 +237,14 @@ DEFINE_NATIVE_ENTRY(Double_parse, 1) {
                               Token::kDOUBLE,
                               &is_positive,
                               &number_string)) {
+    ASSERT(number_string->IsOneByteString());
     const char* cstr = number_string->ToCString();
-    char* p_end = NULL;
-    double double_value = strtod(cstr, &p_end);
-    ASSERT(p_end != cstr);
+
+    double double_value;
+    bool ok = StringToDouble(cstr, number_string->Length(), &double_value);
+    USE(ok);
+    ASSERT(ok);
+
     if (!is_positive) {
       double_value = -double_value;
     }