[Extensions] Convert APIs to use movable types [10]

chrome/common/extensions/api/tts_engine.json

Index: chrome/common/extensions/api/tts_engine.json
diff --git a/chrome/common/extensions/api/tts_engine.json b/chrome/common/extensions/api/tts_engine.json
index 7f0e24eae7a725d10f87d88c646146130c03baa1..57a8048b99048274abe284b03fdee60a08c7a48b 100644
--- a/chrome/common/extensions/api/tts_engine.json
+++ b/chrome/common/extensions/api/tts_engine.json
@@ -6,6 +6,7 @@
   {
     "namespace": "ttsEngine",
     "description": "Use the <code>chrome.ttsEngine</code> API to implement a text-to-speech(TTS) engine using an extension. If your extension registers using this API, it will receive events containing an utterance to be spoken and other parameters when any extension or Chrome App uses the <a href='tts'>tts</a> API to generate speech. Your extension can then use any available web technology to synthesize and output the speech, and send events back to the calling function to report the status.",
+    "compiler_options": {"use_movable_types": true},
     "functions": [
       {
         "name": "sendTtsEvent",