[WIP] Add SpeechSynthesisErrorevent

Source/modules/speech/SpeechSynthesisErrorEvent.idl

Index: Source/modules/speech/SpeechSynthesisErrorEvent.idl
diff --git a/Source/modules/speech/SpeechRecognitionEvent.idl b/Source/modules/speech/SpeechSynthesisErrorEvent.idl
similarity index 75%
copy from Source/modules/speech/SpeechRecognitionEvent.idl
copy to Source/modules/speech/SpeechSynthesisErrorEvent.idl
index 289b1034ef990b44a95fa2142bed5fba6f2ad381..0a97ee6d11ea014cc2241b7ba0f903edc4f3ee7c 100644
--- a/Source/modules/speech/SpeechRecognitionEvent.idl
+++ b/Source/modules/speech/SpeechSynthesisErrorEvent.idl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012 Google Inc. All rights reserved.
+ * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -23,13 +23,20 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-[
-    NoInterfaceObject,
-    Constructor(DOMString type, optional SpeechRecognitionEventInit initDict),
-] interface SpeechRecognitionEvent : Event {
-    readonly attribute unsigned long resultIndex;
-    readonly attribute SpeechRecognitionResultList results;
+enum ErrorCode {
+    "canceled",
+    "interrupted",
+    "audio-busy",
+    "audio-hardware",
+    "network",
+    "synthesis-unavailable",
+    "synthesis-failed",
+    "language-unavailable",
+    "voice-unavailable",
+    "text-too-long",
+    "invalid-argument"
+};
 
-    readonly attribute Document interpretation;
-    readonly attribute Document emma;
+interface SpeechSynthesisErrorEvent : SpeechSynthesisEvent {
+    readonly attribute ErrorCode error;
 };