Web Inspector: Add refresh button to FileSystemView status bar

Web Inspector: Add refresh button to FileSystemView status bar
https://bugs.webkit.org/show_bug.cgi?id=90244

Patch by Taiju Tsuiki <tzik@chromium.org> on 2012-07-02
Reviewed by Vsevolod Vlasov.

Source/WebCore:

* inspector/front-end/FileSystemView.js:
(WebInspector.FileSystemView):
(WebInspector.FileSystemView.prototype.get statusBarItems):
(WebInspector.FileSystemView.prototype.showView):
(WebInspector.FileSystemView.prototype._refresh):
(WebInspector.FileSystemView.EntryTreeElement.prototype._directoryContentReceived):

LayoutTests:

* http/tests/inspector/filesystem/directory-tree.html:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121675 268f45cc-cd09-0410-ab3c-d52691b4dbfc