Some extension APIs allow an extension to send data from one part of the extension to another, such as runtime.sendMessage(), tabs.sendMessage(), runtime.onMessage, the postMessage() method of runtime.port, and tabs.executeScript().
Some extension APIs allow an extension to send data from one part of the extension to another, such as runtime.sendMessage(), tabs.sendMessage(), runtime.onMessage, the postMessage() method of runtime.port, and tabs.executeScript().