Remove API elements that are no longer in the IME API design document

chrome/common/extensions/api/experimental.input.ime.json

 [
   {
     "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"},
-          "keyCode": {"type": "string", "description": "Value of the key being press, unmodified by control keys."},
           "altKey": {"type": "boolean", "optional": true, "description": "Whether or not the ALT key is pressed."},
           "ctrlKey": {"type": "boolean", "optional": true, "description": "Whether or not the CTRL key is pressed."},
           "shiftKey": {"type": "boolean", "optional": true, "description": "Whether or not the SHIFT key is pressed."}
         }
       },
       {
         "id": "InputContext",
         "type": "object",
         "description": "Describes an input Context",
         "properties": {
@@ skipping 298 matching lines @@
                     "id": {"type": "string", "description": "String that will be passed to callbacks referencing this MenuItem."},
                     "label": {"type": "string", "optional": true, "description": "Text displayed in the menu for this item."},
                     "style": {
                       "type": "string",
                       "optional": true,
                       "description": "Enum representing if this item is: none, check, radio, or a separator.  Radio buttons between separators are considered grouped.",
                       "enum": ["none", "check", "radio", "separator"]
                     },
                     "visible": {"type": "boolean", "optional": true, "description": "Indicates this item is visible."},
                     "checked": {"type": "boolean", "optional": true, "description": "Indicates this item should be drawn with a check."},
-                    "enabled": {"type": "boolean", "optional": true, "description": "Indicates this item is enabled."},
-                    "icon": {"type": "string", "optional": true, "description": "Name of the icon to use.  Must be bundled in the extension.  Data urls are also acceptable."},
-                    "shortcutKey": {
-                      "type": "object",
-                      "optional": true,
-                      "description": "Used to create a shortcut key label.  The IME should handle the shortcut key itself, however.",
-                      "properties": {
-                        "key": {"type": "string", "description": "Value of the shortcut key"},
-                        "altKey": {"type": "boolean", "optional": true, "description": "Whether or not the ALT key is pressed."},
-                        "ctrlKey": {"type": "boolean", "optional": true, "description": "Whether or not the CTRL key is pressed."},
-                        "shiftKey": {"type": "boolean", "optional": true, "description": "Whether or not the SHIFT key is pressed."}
-                      }
-                    }
+                    "enabled": {"type": "boolean", "optional": true, "description": "Indicates this item is enabled."}
                   }
                 }
               }
             }
           },
           {
             "type": "function",
             "name": "callback",
             "optional": true,
             "description": "",
@@ skipping 24 matching lines @@
                     "id": {"type": "string", "description": "String that will be passed to callbacks referencing this MenuItem."},
                     "label": {"type": "string", "optional": true, "description": "Text displayed in the menu for this item."},
                     "style": {
                       "type": "string",
                       "optional": true,
                       "description": "Enum representing if this item is: none, check, radio, or a separator.  Radio buttons between separators are considered grouped.",
                       "enum": ["none", "check", "radio", "separator"]
                     },
                     "visible": {"type": "boolean", "optional": true, "description": "Indicates this item is visible."},
                     "checked": {"type": "boolean", "optional": true, "description": "Indicates this item should be drawn with a check."},
-                    "enabled": {"type": "boolean", "optional": true, "description": "Indicates this item is enabled."},
-                    "icon": {"type": "string", "optional": true, "description": "Name of the icon to use.  Must be bundled in the extension.  Data urls are also acceptable."},
-                    "shortcutKey": {
-                      "type": "object",
-                      "optional": true,
-                      "description": "Used to create a shortcut key label.  The IME should handle the shortcut key itself, however.",
-                      "properties": {
-                        "key": {"type": "string", "description": "Value of the key being pressed"},
-                        "altKey": {"type": "boolean", "optional": true, "description": "Whether or not the ALT key is pressed."},
-                        "ctrlKey": {"type": "boolean", "optional": true, "description": "Whether or not the CTRL key is pressed."},
-                        "shiftKey": {"type": "boolean", "optional": true, "description": "Whether or not the SHIFT key is pressed."}
-                      }
-                    }
+                    "enabled": {"type": "boolean", "optional": true, "description": "Indicates this item is enabled."}
                   }
                 }
               }
             }
           },
           {
             "type": "function",
             "name": "callback",
             "optional": true,
             "description": "Called when the operation completes",
@@ skipping 130 matching lines @@
           {
             "type": "string",
             "name": "name",
             "description": "Name of the MenuItem which was activated"
           }
         ]
       }
     ]
   }
 ]