Use String.fromCharCodes() instead of UTF8.decode() for Latin strings.

pkg/analyzer/test/src/summary/flat_buffers_test.dart

 // Copyright (c) 2016, 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.
 
 library test.src.summary.flat_buffers_test;
 
 import 'dart:typed_data';
 
 import 'package:analyzer/src/summary/flat_buffers.dart';
 import 'package:unittest/unittest.dart';
@@ skipping 131 matching lines @@
     // Remaining 6 bytes are the offsets within the object where the ints are
     // located.
     for (int i = 0; i < 3; i++) {
       int offset =
           byteData.getUint16(vTableLoc + 4 + 2 * i, Endianness.LITTLE_ENDIAN);
       expect(byteData.getInt32(tableDataLoc + offset, Endianness.LITTLE_ENDIAN),
           10 + 10 * i);
     }
   }
 
+  void test_table_string() {
+    String latinString = 'test';
+    String unicodeString = 'Проба пера';
+    List<int> byteList;
+    {
+      Builder builder = new Builder(initialSize: 0);
+      Offset<String> latinStringOffset = builder.writeString(latinString);
+      Offset<String> unicodeStringOffset = builder.writeString(unicodeString);
+      builder.startTable();
+      builder.addOffset(0, latinStringOffset);
+      builder.addOffset(1, unicodeStringOffset);
+      Offset offset = builder.endTable();
+      byteList = builder.finish(offset);
+    }
+    // read and verify
+    BufferPointer object = new BufferPointer.fromBytes(byteList).derefObject();
+    expect(const StringReader().vTableGet(object, 0), latinString);
+    expect(const StringReader().vTableGet(object, 1), unicodeString);
+  }
+
   void test_table_types() {
     List<int> byteList;
     {
       Builder builder = new Builder(initialSize: 0);
       Offset<String> stringOffset = builder.writeString('12345');
       builder.startTable();
       builder.addBool(0, true);
       builder.addInt8(1, 10);
       builder.addInt32(2, 20);
       builder.addOffset(3, stringOffset);
@@ skipping 232 matching lines @@
 }
 
 class TestPointReader extends TableReader<TestPointImpl> {
   const TestPointReader();
 
   @override
   TestPointImpl createObject(BufferPointer object) {
     return new TestPointImpl(object);
   }
 }