[Extensions API] Remove inline enums

chrome/common/extensions/api/terminal_private.json

 // 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.
 
 [
   {
     "namespace": "terminalPrivate",
     "compiler_options": {
       "implemented_in": "chrome/browser/extensions/api/terminal/terminal_private_api.h"
     },
     "description": "none",
+    "types": [
+      {
+        "id": "OutputType",
+        "type": "string",
+        "enum": ["stdout", "stderr", "exit"],
+        "description": "Type of the output stream from which output came. When process exits, output type will be set to exit"
+      }
+    ],
     "functions": [
       {
         "name": "openTerminalProcess",
         "type": "function",
         "description": "Starts new process.",
         "parameters": [
           {
             "type": "string",
             "name": "processName",
             "description": "Name of the process to open. Initially only 'crosh' is supported. Another processes may be added in future."
@@ skipping 107 matching lines @@
         "type": "function",
         "description": "Fired when an opened process writes something to its output.",
         "parameters": [
           {
             "name": "pid",
             "type": "integer",
             "description": "Pid of the process from which the output came."
           },
           {
             "name": "type",
-            "type": "string",
-            "description": "Type of the output stream from which output came. When process exits, output type will be set to exit",
-            "enum": ["stdout", "stderr", "exit"]
+            "$ref": "OutputType",
+            "description": "Type of the output stream from which output came. When process exits, output type will be set to exit"
           },
           {
             "name": "text",
             "type": "string",
             "description": "Text that was written to the output stream."
           }
         ]
       }
     ]
   }
 ]