Fix braille backtranslation size limit.

chrome/test/data/chromeos/liblouis_nacl/test.js

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var pass = chrome.test.callbackPass;
 
 var TABLE_NAME = 'en-us-comp8.ctb';
+var CONTRACTED_TABLE_NAME = 'en-us-g2.ctb';
 var TEXT = 'hello';
 // Translation of the above string as a hexadecimal sequence of cells.
 var CELLS = '1311070715';
 
 var pendingCallback = null;
 var pendingMessageId = -1;
 var nextMessageId = 0;
 var naclEmbed = null;
 
 function loadLibrary(callback) {
@@ skipping 56 matching lines @@
         pass(expectSuccessReply(function(reply) {
           chrome.test.assertEq(CELLS, reply['cells']);
         })));
   },
 
   // Regression test for the case where the translated result is more than
   // the double size of the input.  In this particular case, a single capital
   // letter 'T' should be translated to 3 cells in US English grade 2
   // braille (dots 56, 6, 2345).
   function testTranslateGrade2SingleCapital() {
-    rpc('Translate', { 'table_name': 'en-us-g2.ctb', 'text': 'T'},
+    rpc('Translate', { 'table_name': CONTRACTED_TABLE_NAME, 'text': 'T'},
         pass(expectSuccessReply(function(reply) {
           chrome.test.assertEq('30201e', reply['cells']);
         })));
   },
 
   function testBackTranslateString() {
     rpc('BackTranslate', { 'table_name': TABLE_NAME, 'cells': CELLS},
         pass(expectSuccessReply(function(reply) {
           chrome.test.assertEq(TEXT, reply['text']);
         })));
   },
+
+  // Backtranslate a one-letter contraction that expands to a much larger
+  // string (k->knowledge).
+  function testBackTranslateContracted() {
+    rpc('BackTranslate', { 'table_name': CONTRACTED_TABLE_NAME,
+                           'cells': '05'},  // dots 1 and 3
+        pass(expectSuccessReply(function(reply) {
+          chrome.test.assertEq('knowledge', reply['text']);
+        })));
+  },
 ])});