https://bugs.webkit.org/show_bug.cgi?id=94484

Reviewed by Vsevolod Vlasov.

Source/WebCore:

- Introduces global batch update schema
- Migrates Toolbar and TabbedPane to the new schema

* inspector/front-end/ScriptsPanel.js:
(WebInspector.ScriptsPanel):
* inspector/front-end/TabbedPane.js:
(WebInspector.TabbedPane.prototype.appendTab):
(WebInspector.TabbedPane.prototype._updateTabElements):
(WebInspector.TabbedPane.prototype._innerUpdateTabElements):
(WebInspector.TabbedPane.prototype._updateWidths):
(WebInspector.TabbedPane.prototype._measureWidths):
(WebInspector.TabbedPaneTab):
(WebInspector.TabbedPaneTab.prototype.width):
(WebInspector.TabbedPaneTab.prototype.setWidth):
* inspector/front-end/Toolbar.js:
(WebInspector.Toolbar):
(WebInspector.Toolbar.prototype._updateDropdownButtonAndHideDropdown):
(WebInspector.Toolbar.prototype._innerUpdateDropdownButtonAndHideDropdown):
* inspector/front-end/UIUtils.js:
(WebInspector.startBatchUpdate):
(WebInspector.invokeOnceAfterBatchUpdate.get if):
(WebInspector.invokeOnceAfterBatchUpdate):
* inspector/front-end/inspector.js:
* inspector/front-end/utilities.js:

LayoutTests:

* inspector/start-end-batch-update-expected.txt: Added.
* inspector/start-end-batch-update.html: Added.
* inspector/tabbed-pane-tabs-to-show.html:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@126268 268f45cc-cd09-0410-ab3c-d52691b4dbfc