Implement input.ime.sendKeyEvents API.

chrome/common/extensions/api/input_ime.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": "input.ime",
     "description": "Use the <code>chrome.input.ime</code> API to implement a custom IME for Chrome OS. This allows your extension to handle keystrokes, set the composition, and manage the candidate window.",
     "types": [
       {
@@ skipping 251 matching lines @@
                 "type": "boolean"
               }
             ]
           }
         ]
       },
       {
         "name": "sendKeyEvents",
         "type": "function",
         "description": "Sends the key events.  This function is expected to be used by virtual keyboards.  When key(s) on a virtual keyboard is pressed by a user, this function is used to propagate that event to the system.",
-        "platforms": ["chromeos"],
+        "platforms": ["chromeos", "win", "linux"],
         "parameters": [
           {
             "name": "parameters",
             "type": "object",
             "properties": {
               "contextID": {
                 "description": "ID of the context where the key events will be sent, or zero to send key events to non-input field.",
                 "type": "integer"
               },
               "keyData": {
@@ skipping 454 matching lines @@
           {
             "$ref": "InputContext",
             "name": "context",
             "description": "An InputContext object describing the text field that has changed."
           }
         ]
       },
       {
         "name": "onKeyEvent",
         "type": "function",
-        "description": "This event is sent if this extension owns the active IME.",
+        "description": "Fired when a key event is sent from the operating system. The event will be sent to the extension if this extension owns the active IME.",
         "platforms": ["chromeos", "win", "linux"],
         "options": {
           "supportsFilters": false,
           "supportsListeners": true,
           "supportsRules": false,
           "maxListeners": 1
         },
         "parameters": [
           {
             "type": "string",
@@ skipping 123 matching lines @@
             "type": "array",
             "name": "boundsList",
             "description": "List of bounds information for each character on IME composition text. If there's no composition text in the editor, this array contains the bound information of the cursor.",
             "items": { "$ref": "Bounds" }
           }
         ]
       }
     ]
   }
 ]