Web Inspector: TabbedPane should use tabElement width measuring to layout tab elements when width is too small to fit them.
https://bugs.webkit.org/show_bug.cgi?id=75005

Reviewed by Pavel Feldman.

Source/WebCore:

Test: inspector/tabbed-pane-max-tab-width-calculation.html

* inspector/front-end/NetworkItemView.js:
(WebInspector.NetworkItemView.prototype.wasShown):
* inspector/front-end/TabbedPane.js:
(WebInspector.TabbedPane):
(WebInspector.TabbedPane.prototype.appendTab):
(WebInspector.TabbedPane.prototype._createTabElement):
(WebInspector.TabbedPane.prototype.onResize):
(WebInspector.TabbedPane.prototype._maybeMeasureAndUpdate):
(WebInspector.TabbedPane.prototype._measureTab):
(WebInspector.TabbedPane.prototype._updateWidths):
(WebInspector.TabbedPane.prototype._calculateMaxWidth):
(WebInspector.TabbedPaneTab):
* inspector/front-end/inspector.css:
(.tabbed-pane-header):
(.tabbed-pane-header-tabs):
(.tabbed-pane-header-tab):
(.tabbed-pane-header-tab.measuring):
(.tabbed-pane-header-tab.selected):
* inspector/front-end/scriptsPanel.css:
(#scripts-navigator-tabbed-pane .tabbed-pane-header-tabs):

LayoutTests:

* inspector/tabbed-pane-max-tab-width-calculation-expected.txt: Added.
* inspector/tabbed-pane-max-tab-width-calculation.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@103406 268f45cc-cd09-0410-ab3c-d52691b4dbfc