Web Inspector: [Network] Minor refactorings.
https://bugs.webkit.org/show_bug.cgi?id=108162

Patch by Eugene Klyuchnikov <eustas@chromium.org> on 2013-02-04
Reviewed by Vsevolod Vlasov.

Apply minor refactorings to NetworkPanel.js
Add hint to statusbar selector buttons.

* English.lproj/localizedStrings.js: Added hint string.
* inspector/front-end/NetworkPanel.js:
(WebInspector.NetworkLogView.prototype._createStatusBarItems): Ditto.
(WebInspector.NetworkLogView.prototype._makeHeaderFragment):
Applied minor refactoring.
(WebInspector.NetworkLogView.prototype._createStatusBarItems.createFilterElement):
Ditto.
(WebInspector.NetworkLogView.prototype._updateOffscreenRows): Ditto.
(WebInspector.NetworkPanel.prototype._onRowSizeChanged): Ditto.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141765 268f45cc-cd09-0410-ab3c-d52691b4dbfc