Make registering custom hooks with schema_generated_bindings.js safer and

chrome/renderer/resources/extensions/tts_custom_bindings.js

 // Copyright (c) 2012 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.
 
 // Custom bindings for the tts API.
 
 (function() {
 
 native function GetChromeHidden();
 native function GetNextTTSEventId();
@@ skipping 13 matching lines @@
                      type: event.type,
                      charIndex: event.charIndex,
                      errorMessage: event.errorMessage
                    });
       if (event.isFinalEvent) {
         delete chromeHidden.tts.handlers[event.srcId];
       }
     }
   });
 
-  apiFunctions.setHandleRequest("tts.speak", function() {
+  apiFunctions.setHandleRequest('speak', function() {
     var args = arguments;
     if (args.length > 1 && args[1] && args[1].onEvent) {
       var id = GetNextTTSEventId();
       args[1].srcId = id;
       chromeHidden.tts.handlers[id] = args[1].onEvent;
     }
     sendRequest(this.name, args, this.definition.parameters);
     return id;
   });
 });
 
 })();