[Remoting Host] Handle text event characters that are not presented on the keyboard

remoting/host/linux/unicode_to_keysym_unittest.cc

 // Copyright 2014 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.
 
 #include "remoting/host/linux/unicode_to_keysym.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 19 matching lines @@
 
     // Characters with 3 distinct keysyms.
     { 0x0030, { 0x0030, 0xffb0, 0x01000030, 0 } },
     { 0x005f, { 0x005f, 0x0bc6, 0x0100005f, 0 } },
 
     // Characters for which there are no regular keysyms.
     { 0x4444, { 0x01004444, 0 } },
   };
 
   for (size_t i = 0; i < arraysize(kTests); ++i) {
-    std::vector<uint32_t> keysyms;
-    GetKeySymsForUnicode(kTests[i].code_point, &keysyms);
+    std::vector<uint32_t> keysyms = GetKeySymsForUnicode(kTests[i].code_point);
 
     std::vector<uint32_t> expected(
         kTests[i].expected_keysyms,
         std::find(
             kTests[i].expected_keysyms, kTests[i].expected_keysyms + 4, 0));
     EXPECT_EQ(expected, keysyms);
   }
 }
 
 }  // namespace remoting