Web Inspector: restore partial front-end compilability

Web Inspector: restore partial front-end compilability
https://bugs.webkit.org/show_bug.cgi?id=69221

Removed unused isWhitespace; introduced missing classes in Inspector.json;
generated externs for the protocol types along with the commands.

Patch by Pavel Feldman <pfeldman@chromium.org> on 2011-10-03
Reviewed by Yury Semikhatsky.

* inspector/Inspector.json:
* inspector/compile-front-end.sh:
* inspector/front-end/DOMAgent.js:
(WebInspector.DOMAgent):
(WebInspector.DOMAgent.prototype._dispatchWhenDocumentAvailable.onDocumentAvailable):
(WebInspector.DOMAgent.prototype._dispatchWhenDocumentAvailable):
* inspector/front-end/ElementsPanel.js:
(WebInspector.ElementsPanel.prototype.updateBreadcrumb):
* inspector/front-end/ElementsTreeOutline.js:
():
* inspector/front-end/Object.js:
* inspector/front-end/Popover.js:
(WebInspector.PopoverHelper.prototype._mouseMove):
* inspector/front-end/View.js:
* inspector/front-end/externs.js:
(Array.prototype.remove):
* inspector/generate-protocol-externs:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@96485 268f45cc-cd09-0410-ab3c-d52691b4dbfc