Do not pass URLs in onUpdated events to extensions unless they have the
"tabs" permission.

BUG=168442


Review URL: https://chromiumcodereview.appspot.com/11824004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@176406 0039d316-1c4b-4281-b951-d872f2087c98
bool ExtensionTabUtil::GetTabById(int tab_id,
                                  Profile* profile,
                                  bool include_incognito,
                                  Browser** browser,
                                  TabStripModel** tab_strip,
                                  content::WebContents** contents,
                                  int* tab_index) {
  NOTIMPLEMENTED();
  return false;
}

bool ExtensionTabUtil::GetTabById(int tab_id,
                                  Profile* profile,
                                  bool include_incognito,
                                  Browser** browser,
                                  TabStripModel** tab_strip,
                                  content::WebContents** contents,
                                  int* tab_index) {
  NOTIMPLEMENTED();
  return false;
}
