chrome extension to log tabs user watched.

log_tabs.js

var tabToUrl = {};

chrome.tabs.onCreated.addListener(
  function(tab) {
    console.log("create "+tab.url);
  }
);

chrome.tabs.onUpdated.addListener(
  function(tabId, changeInfo, tab) {
    console.log("update "+changeInfo.url);
    tabToUrl[tabId] = tab.url;
  }
);

chrome.tabs.onActivated.addListener(
  function(activeInfo) {
    chrome.tabs.get(activeInfo.tabId, function(tab) {
      console.log("activate "+tab.url);
    });
  }
);

chrome.tabs.onHighlighted.addListener(
  function(highlightInfo) {
    chrome.tabs.get(highlightInfo.tabIds[0], function(tab) {
      console.log("highlight "+tab.url);
    });
  }
);

chrome.tabs.onRemoved.addListener(
  function(tabId, removeInfo) {
    console.log("delete "+tabToUrl[tabId]);
    delete tabToUrl[tabId];
  }
);

chrome.tabs.onReplaced.addListener(
  function(addedTabId, removedTabid) {
    chrome.tabs.get(addedTabId, function(tab) {
      console.log("replace "+tab.url);
    });
  }
);