Update TTS extension API docs to reflect latest changes. Note that this

chrome/test/data/extensions/api_test/tts_engine/register_engine/test.js

 // Copyright (c) 2011 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.
 
 // TTS api test for Chrome on ChromeOS.
 // browser_tests.exe --gtest_filter="TtsApiTest.*"
 
 if (!chrome.tts) {
   chrome.tts = chrome.experimental.tts;
 }
 
 if (!chrome.ttsEngine) {
   chrome.ttsEngine = chrome.experimental.ttsEngine;
 }
 
 chrome.test.runTests([
   function testNoListeners() {
     // This call should go to native speech because we haven't registered
     // any listeners.
     chrome.tts.speak(
         'native speech',
         {
-         'onevent': function(event) {
+         'onEvent': function(event) {
            if (event.type == 'end') {
              chrome.test.succeed();
            }
          }
         }, function() {
           chrome.test.assertNoLastError();
         });
   },
   function testTtsEngine() {
     var calledOurEngine = false;
 
     // Register listeners for speech functions, enabling this extension
     // to be a TTS engine.
     var speakListener = function(utterance, options, sendTtsEvent) {
         chrome.test.assertNoLastError();
         chrome.test.assertEq('extension speech', utterance);
         calledOurEngine = true;
         sendTtsEvent({'type': 'end', 'charIndex': utterance.length});
       };
     var stopListener = function() {};
     chrome.ttsEngine.onSpeak.addListener(speakListener);
     chrome.ttsEngine.onStop.addListener(stopListener);
 
     // This call should go to our own speech engine.
     chrome.tts.speak(
         'extension speech',
         {
-         'onevent': function(event) {
+         'onEvent': function(event) {
            if (event.type == 'end') {
              chrome.test.assertEq(true, calledOurEngine);
              chrome.ttsEngine.onSpeak.removeListener(speakListener);
              chrome.ttsEngine.onStop.removeListener(stopListener);
              chrome.test.succeed();
            }
          }
         },
         function() {
           chrome.test.assertNoLastError();
@@ skipping 15 matching lines @@
     chrome.ttsEngine.onStop.addListener(stopListener);
 
     // These don't match the voices in the manifest, so they should
     // go to native speech. The gmock assertions in TtsApiTest::RegisterEngine
     // enforce that the native TTS handlers are called.
     chrome.tts.speak(
         'native speech 2',
         {
          'voiceName': 'George',
          'enqueue': true,
-         'onevent': function(event) {
+         'onEvent': function(event) {
            if (event.type == 'end') {
              callbacks++;
            }
          }
         }, function() {
           chrome.test.assertNoLastError();
         });
     chrome.tts.speak(
         'native speech 3',
         {
          'lang': 'fr-FR',
          'enqueue': true,
-         'onevent': function(event) {
+         'onEvent': function(event) {
            if (event.type == 'end') {
              callbacks++;
            }
          }
         }, function() {
           chrome.test.assertNoLastError();
         });
 
     // These do match the voices in the manifest, so they should go to our
     // own TTS engine.
     chrome.tts.speak(
         'extension speech 2',
         {
          'voiceName': 'Alice',
          'enqueue': true,
-         'onevent': function(event) {
+         'onEvent': function(event) {
            if (event.type == 'end') {
              callbacks++;
            }
          }
         }, function() {
           chrome.test.assertNoLastError();
         });
     chrome.tts.speak(
         'extension speech 3',
         {
          'voiceName': 'Pat',
          'gender': 'male',
          'enqueue': true,
-         'onevent': function(event) {
+         'onEvent': function(event) {
            if (event.type == 'end') {
              callbacks++;
              chrome.ttsEngine.onSpeak.removeListener(speakListener);
              chrome.ttsEngine.onStop.removeListener(stopListener);
              if (callbacks == 4 && speakListenerCalls == 2) {
                chrome.test.succeed();
              }
            }
          }
         }, function() {
@@ skipping 20 matching lines @@
       chrome.test.assertEq('Alice', voices[1].voiceName);
       chrome.test.assertEq('en-US', voices[1].lang);
       chrome.test.assertEq('female', voices[1].gender);
 
       chrome.test.assertEq('Pat', voices[2].voiceName);
       chrome.test.assertEq('en-US', voices[2].lang);
       chrome.test.succeed();
     });
   }
 ]);