Rename permission from input to ime.

chrome/common/extensions/api/extension_api.json

 [
   {
     "namespace": "extension",
     "types": [
       {
         "id": "MessageSender",
         "type": "object",
         "description": "An object containing information about the script context that sent a message or request.",
         "properties": {
           "tab": {"$ref": "Tab", "optional": true, "description":"This property will <b>only</b> be present when the connection was opened from a tab or content script."},
@@ skipping 3343 matching lines @@
             "name": "type",
             "enum": ["none", "text", "password", "search", "email", "number", "tel", "url"],
             "description": "Type of the current focused input field."
           }
         ]
       }
     ]
   },
   {
     "namespace": "experimental.input.ime",
+    "platforms": ["chromeos"],
     "nodoc": true,
     "types": [
       {
         "id": "KeyboardEvent",
         "type": "object",
         "description": "See http://www.w3.org/TR/DOM-Level-3-Events/#events-KeyboardEvent",
         "properties": {
           "type": {"type": "string", "description": "One of keyup or keydown.", "enum": ["keyup", "keydown"]},
           "requestId": {"type": "string", "description": "The ID of the request."},
           "key": {"type": "string", "description": "Value of the key being pressed"},
@@ skipping 5960 matching lines @@
                   }
                 }
               }
             ]
           }
         ]
       }
     ]
   }
 ]