Revert of Integrate browser tests with new EME player.

chrome/test/data/media/eme_player_js/file_io_test_player.js

-// 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.
-
-// File IO test player is used to test File IO CDM functionality.
-function FileIOTestPlayer() {
-}
-
-FileIOTestPlayer.prototype.init = function(video) {
-  InitPrefixedEMEPlayer(this, video);
-};
-
-FileIOTestPlayer.prototype.onWebkitKeyMessage = function(message) {
-  // The test result is either '0' or '1' appended to the header.
-  if (Utils.hasPrefix(message.message, FILE_IO_TEST_RESULT_HEADER)) {
-    if (message.message.length != FILE_IO_TEST_RESULT_HEADER.length + 1) {
-      Utils.failTest('Unexpected FileIOTest CDM message' + message.message);
-      return;
-    }
-    var result_index = FILE_IO_TEST_RESULT_HEADER.length;
-    var success = String.fromCharCode(message.message[result_index]) == 1;
-    Utils.timeLog('CDM file IO test: ' + (success ? 'Success' : 'Fail'));
-    if (success)
-      Utils.setResultInTitle(FILE_IO_TEST_SUCCESS);
-    else
-      Utils.failTest('File IO CDM message fail status.');
-  }
-};