URLが変わっている
chrome://browser/content/bookmarks/bookmarksPanel.xul
chrome://browser/content/history/history-panel.xul
これらに変更
chrome://browser/content/places/bookmarksSidebar.xul
chrome://browser/content/places/historySidebar.xul
https://egg.5ch.net/test/read.cgi/software/1513178964/574
