Native Messaging!

chrome/common/extensions/docs/samples.json

 {
   "api": {
     "chrome.alarms.clear": "alarms.html#method-clear",
     "chrome.alarms.clearAll": "alarms.html#method-clearAll",
     "chrome.alarms.create": "alarms.html#method-create",
     "chrome.alarms.get": "alarms.html#method-get",
     "chrome.alarms.getAll": "alarms.html#method-getAll",
     "chrome.alarms.onAlarm": "alarms.html#event-onAlarm",
     "chrome.app.window.create": "app.window.html#method-create",
     "chrome.app.window.focus": "app.window.html#method-focus",
@@ skipping 202 matching lines @@
     "chrome.extension.getBackgroundPage": "extension.html#method-getBackgroundPage",
     "chrome.extension.getURL": "extension.html#method-getURL",
     "chrome.extension.getViews": "extension.html#method-getViews",
     "chrome.extension.isAllowedFileSchemeAccess": "extension.html#method-isAllowedFileSchemeAccess",
     "chrome.extension.isAllowedIncognitoAccess": "extension.html#method-isAllowedIncognitoAccess",
     "chrome.extension.onConnect": "extension.html#event-onConnect",
     "chrome.extension.onConnectExternal": "extension.html#event-onConnectExternal",
     "chrome.extension.onMessage": "extension.html#event-onMessage",
     "chrome.extension.onMessageExternal": "extension.html#event-onMessageExternal",
     "chrome.extension.sendMessage": "extension.html#method-sendMessage",
+    "chrome.extension.sendNativeMessage": "extension.html#method-sendNativeMessage",
     "chrome.extension.setUpdateUrlData": "extension.html#method-setUpdateUrlData",
     "chrome.fileBrowserHandler.onExecute": "fileBrowserHandler.html#event-onExecute",
     "chrome.fileBrowserHandler.selectFile": "fileBrowserHandler.html#method-selectFile",
     "chrome.fileSystem.chooseFile": "fileSystem.html#method-chooseFile",
     "chrome.fileSystem.getDisplayPath": "fileSystem.html#method-getDisplayPath",
     "chrome.fileSystem.getWritableFileEntry": "fileSystem.html#method-getWritableFileEntry",
     "chrome.fileSystem.isWritableFileEntry": "fileSystem.html#method-isWritableFileEntry",
     "chrome.fontSettings.clearDefaultFixedFontSize": "fontSettings.html#method-clearDefaultFixedFontSize",
     "chrome.fontSettings.clearDefaultFontSize": "fontSettings.html#method-clearDefaultFontSize",
     "chrome.fontSettings.clearFont": "fontSettings.html#method-clearFont",
@@ skipping 2552 matching lines @@
         "manifest.json",
         "popup.html",
         "popup.js",
         "sample.css"
       ],
       "source_hash": "8e51dc3a9577065d22ce92f3c838edc5ceaf4e65",
       "zip_path": "examples/api/extension/isAllowedAccess.zip"
     }
   ]
 }