Update range errors to agree on the numbers.

runtime/lib/simd128.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/bootstrap_natives.h"
 
 #include "vm/exceptions.h"
 #include "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/symbols.h"
 
 namespace dart {
 
 static void ThrowMaskRangeException(int64_t m) {
   if ((m < 0) || (m > 255)) {
     Exceptions::ThrowRangeError(
-        "mask", Integer::Handle(Integer::New(m)), 0, 256);
+        "mask", Integer::Handle(Integer::New(m)), 0, 255);
   }
 }
 
 
 DEFINE_NATIVE_ENTRY(Float32x4_fromDoubles, 5) {
   ASSERT(TypeArguments::CheckedHandle(arguments->NativeArgAt(0)).IsNull());
   GET_NON_NULL_NATIVE_ARGUMENT(Double, x, arguments->NativeArgAt(1));
   GET_NON_NULL_NATIVE_ARGUMENT(Double, y, arguments->NativeArgAt(2));
   GET_NON_NULL_NATIVE_ARGUMENT(Double, z, arguments->NativeArgAt(3));
   GET_NON_NULL_NATIVE_ARGUMENT(Double, w, arguments->NativeArgAt(4));
@@ skipping 845 matching lines @@
 
 
 DEFINE_NATIVE_ENTRY(Float64x2_sqrt, 1) {
   GET_NON_NULL_NATIVE_ARGUMENT(Float64x2, self, arguments->NativeArgAt(0));
   double _x = sqrt(self.x());
   double _y = sqrt(self.y());
   return Float64x2::New(_x, _y);
 }
 
 }  // namespace dart