Remove commented lines from XMLViewer.js
Remove commented lines from XMLViewer.js

R=pfeldman

Review URL: https://chromiumcodereview.appspot.com/22603010

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@155862 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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