chrome.tabs.query({'active': true, 'windowId': chrome.windows.WINDOW_ID_CURRENT},
function(tab){
chrome.tabs.executeScript(tab.id,{code:"document.title = 'My lame title!'"});
}
);
. , , ....
chrome.tabs.executeScript(tabId,{code:"document.title = 'My lame title!'"});
.. tabId tab.id , .