Enable and implement last 2 items in bookmark bar context menu: "Open

All In New Window" and "Open All In Incognito Window"  (17616).

Bookmark Folders have the bar context menu, not the bookmark context
menu (26748).

Disable bookmark manager item on bookmark contextual menus (26944).

BUG=http://crbug.com/17616, http://crbug.com/26748, http://crbug.com/26944

TEST=Add some bookmarks.
Make sure "Open All In New Window" and "Open All In Incognito Window" work from the bar context menu.
Add a bookmark folder.
Make sure the context menu of the folder is the bar conetxt menu, not the 'mark context menu.
Make sure Bookmark Manager item is DISabled in both context menus.

nib change: hook up actions in the "Open All Blah" items just like the normal "Open All". 

Review URL: http://codereview.chromium.org/373022

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31748 0039d316-1c4b-4281-b951-d872f2087c98