Web Inspector: StyleSource should set content using CSSStyleModelResourceBinding...

Web Inspector: StyleSource should set content using CSSStyleModelResourceBinding directly.
https://bugs.webkit.org/show_bug.cgi?id=89891

Reviewed by Pavel Feldman.

StyleSource now calls CSS resource binding directly.
CSS resource binding now adds resource revision only after setStyleSheetText call returns from backend.
Resource.revertAndClearHistory is now clearing history asynchronously
since Resource.setContent adds revision that should be removed as well.

* inspector/front-end/CSSStyleModel.js:
(WebInspector.CSSStyleModel.prototype.getViaInspectorResourceForRule):
(WebInspector.CSSStyleModel.prototype.resourceBinding):
(WebInspector.CSSStyleModelResourceBinding.prototype.setStyleContent.innerCallback):
(WebInspector.CSSStyleModelResourceBinding.prototype.setStyleContent):
(WebInspector.CSSStyleModelResourceBinding.prototype.setContent):
* inspector/front-end/Resource.js:
(WebInspector.Resource.prototype.revertAndClearHistory):
(WebInspector.Resource.prototype.revertAndClearHistory.clearHistory):
* inspector/front-end/RevisionHistoryView.js:
(WebInspector.RevisionHistoryView.prototype._createResourceItem):
* inspector/front-end/StylesPanel.js:
(WebInspector.StyleSource.prototype.workingCopyCommitted):
(WebInspector.StyleSource.prototype.workingCopyChanged):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121672 268f45cc-cd09-0410-ab3c-d52691b4dbfc