Load the Chrome OS TTS engine manifest from the file system isntead of resources.

chrome/browser/resources/chromeos/speech_synthesis/manifest_guest.json

Index: chrome/browser/resources/chromeos/speech_synthesis/manifest_guest.json
diff --git a/chrome/browser/resources/chromeos/speech_synthesis/manifest_guest.json b/chrome/browser/resources/chromeos/speech_synthesis/manifest_guest.json
deleted file mode 100644
index c7efa02acd87524231eefc7e7bf12d557410d90b..0000000000000000000000000000000000000000
--- a/chrome/browser/resources/chromeos/speech_synthesis/manifest_guest.json
+++ /dev/null
@@ -1,94 +0,0 @@
-{
-  // NOTE: Keep two json files in this directory in sync. The only difference
-  // should be incognito:split in Guest mode version.
-  "name": "Chrome OS built-in text-to-speech extension",
-  "version": "2.1.1",
-  "description": "This is a high-quality text-to-speech (TTS) voice extension that runs in your browser using Native Client technology.",
-  "manifest_version": 2,
-  "incognito": "split",
-  "background": {
-    "scripts": [
-      "voice_data_hmm_de-DE_2.js",
-      "voice_data_hmm_en-GB_2.js",
-      "voice_data_hmm_en-IN_2.js",
-      "voice_data_hmm_en-US_2.js",
-      "voice_data_hmm_es-ES_2.js",
-      "voice_data_hmm_es-US_2.js",
-      "voice_data_hmm_fr-FR_2.js",
-      "voice_data_hmm_it-IT_2.js",
-      "voice_data_hmm_ko-KR_2.js",
-      "voice_data_hmm_pt-BR_2.js",
-      "tts_controller.js",
-      "tts_main.js"
-    ]
-  },
-  "permissions": [
-    "ttsEngine",
-    "unlimitedStorage"
-  ],
-  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlKEJseIIbKFyX0BCWNYOWlPEUt1IxBvIoW1PI7DTmipbwyVr3s2EprewYdtr9hCO5Yzs5w/ai1Xnhet5PLAsMje6ZP0Kvq0tlVfaYF8oQHBPF+ifx31RBT7Cn+ZVKLq1fxrwzY063GVhW+CAr06Ar8YRFXtFoC4FHlUNDIoSb4wIDAQAB",
-  "tts_engine": {
-    "voices": [
-      {
-        "voice_name": "Chrome OS German",
-        "lang": "de-DE",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      },
-      {
-        "voice_name": "Chrome OS British English",
-        "lang": "en-GB",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      },
-      {
-        "voice_name": "Chrome OS Indian English",
-        "lang": "en-IN",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      },
-      {
-        "voice_name": "Chrome OS US English",
-        "lang": "en-US",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      },
-      {
-        "voice_name": "Chrome OS Spanish",
-        "lang": "es-ES",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      },
-      {
-        "voice_name": "Chrome OS US Spanish",
-        "lang": "es-US",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      },
-      {
-        "voice_name": "Chrome OS French",
-        "lang": "fr-FR",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      },
-      {
-        "voice_name": "Chrome OS Italian",
-        "lang": "it-IT",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      },
-      {
-        "voice_name": "Chrome OS Korean",
-        "lang": "ko-KR",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      },
-      {
-        "voice_name": "Chrome OS Brazilian Portuguese",
-        "lang": "pt-BR",
-        "gender": "female",
-        "event_types": [ "start", "word", "end", "error" ]
-      }
-    ]
-  }
-}