[Web Inspector] Network panel, sort by "transferSize" instead of "resourceSize".
https://bugs.webkit.org/show_bug.cgi?id=109142.

Patch by Pan Deng <pan.deng@intel.com> on 2013-02-11
Reviewed by Vsevolod Vlasov.

Sort by "transferSize" as it is the primary rather than "resoureSize".

No new tests.

* inspector/front-end/NetworkPanel.js:
(WebInspector.NetworkDataGridNode.SizeComparator):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@142443 268f45cc-cd09-0410-ab3c-d52691b4dbfc