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.');
+  }
+};