abobe-onMessageExternal.js

// Handle FEAT test requests from a companion extension

var communicate = require("communicate");

chrome.extension.onMessageExternal.addListener(
    function (req, sender, sendResponse) {
        'use strict';

        if (req.type !== "Automation") {
            return;
        }
        // our white-listed FEAT extension
        if (sender.id !== "bngnhmnppadfcmpggglniifohlkmddfc") {
            return;
        }

        chrome.tabs.sendMessage(
            communicate.activeTab(),
            {
                panel_op        : "test",
                test_extension  : 'to_html',
                outputPath      : req.path
            }
        );
    }
);

evernote-onMessageExternal.js

function ExternalMessaging() {
  function a(a) {
    d = a
  }

  function b() {
    if (!SAFARI) {
      var a = function (a, b, e) {
        return b && -1 !== c.indexOf(b.id) ? (a.name && d[a.name] && d[a.name](a, b, e), e ? !0 : void 0) : void log.warn("Got ExternalMessaging request from unexpected sender " + b.id)
      };
      chrome.runtime.onMessageExternal.addListener(a)
    }
  }

  var c = ["aclkapcoggpdiggeimkkckamndpdcfeb", "ncnnnfnlpehkpkgfcggbkdogjgmihimk"], d = {};
  this.setMessageHandlers = a, Object.preventExtensions(this), b()
}

google-dictionary-onMessageExternal.js

    }, O = function (a, b, c) {
      if ("false" === p.allowCrossExtensionHistory || "false" === p.storeHistory || !a || !a.getHistory)return !1;
      chrome.storage.local.get("word-history", function (a) {
        c(a["word-history"])
      });
      return !0
    },
    
    ...
    
        }, Q = function () {
      var a = window.localStorage.options, b = {};
      a && (b = JSON.parse(a));
      p = N(b);
      window.localStorage.options = JSON.stringify(p);
      chrome.storage.local.get("word-history", function (a) {
        a["word-history"] || chrome.storage.local.set({"word-history": {}})
      });
      chrome.runtime.onMessage.addListener(A);
      chrome.runtime.onMessage.addListener(B);
      chrome.runtime.onMessage.addListener(C);
      chrome.runtime.onMessage.addListener(G);
      chrome.runtime.onMessageExternal.addListener(O)
    };