chrome-devtool/panel.js
function(message) {
  message.tabId = chrome.devtools.inspectedWindow.tabId
  chrome.extension.sendMessage(message)
}
function(message) {
  message.tabId = chrome.devtools.inspectedWindow.tabId
  chrome.extension.sendMessage(message)
}
function ( message ) { message . tabId = chrome . devtools . inspectedWindow . tabId chrome . extension . sendMessage ( message ) }
Creates and maintains the communication channel from the devtools panel to the background script. The panel is the page in the devtools tab, containing the Tracer.  Messages are JSON objects { action: ["code"|"script"|"message"], // What action to perform on the inspected page content: [String|Path to script|Object], // data to be passed through tabId: [Automatically added] } This sends an object to the background page where it can be relayed to the inspected page
Creates and maintains the communication channel from the devtools panel to the background script . The panel is the page in the devtools tab containing the Tracer . Messages are JSON objects { action : [ code | script | message ] // What action to perform on the inspected page content : [ String|Path to script|Object ] // data to be passed through tabId : [ Automatically added ] } This sends an object to the background page where it can be relayed to the inspected page