[arm, arm64] Implemented unaligned scalar float access.

tests/language/vm/unaligned_float_access_register_index_test.dart

Index: tests/language/vm/unaligned_float_access_register_index_test.dart
diff --git a/tests/language/vm/unaligned_float_access_register_index_test.dart b/tests/language/vm/unaligned_float_access_register_index_test.dart
index 334efe5f268fa52487b5a2cde6fff943a5197283..4042ec3d8d75e5397ccae096d782da846ebf498b 100644
--- a/tests/language/vm/unaligned_float_access_register_index_test.dart
+++ b/tests/language/vm/unaligned_float_access_register_index_test.dart
@@ -9,16 +9,16 @@ import 'package:expect/expect.dart';
 unalignedFloat32() {
   var bytes = new ByteData(64);
   for (var i = 0; i < 4; i++) {
-    bytes.setFloat32(i, 16.25);
-    Expect.equals(16.25, bytes.getFloat32(i));
+    bytes.setFloat32(i, 16.25, Endianness.HOST_ENDIAN);
+    Expect.equals(16.25, bytes.getFloat32(i, Endianness.HOST_ENDIAN));
   }
 }
 
 unalignedFloat64() {
   var bytes = new ByteData(64);
   for (var i = 0; i < 8; i++) {
-    bytes.setFloat64(i, 16.25);
-    Expect.equals(16.25, bytes.getFloat64(i));
+    bytes.setFloat64(i, 16.25, Endianness.HOST_ENDIAN);
+    Expect.equals(16.25, bytes.getFloat64(i, Endianness.HOST_ENDIAN));
   }
 }