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Ctrl+Shift+K will now do this in build 2036
Chrome style delayed-tab-resizing-on-close only makes sense if all the tabs are the same width, as they are in Chrome.

Sublime Text 2 uses different width tabs, to better make use of the available space. This is done because file names in text editors are much more important that titles on web pages.

If resizing were delayed, then it would in general be no help, as the close button of the next tab would not come to be under the mouse cursor.