Web Inspector: Add changes for Spectrum colorpicker

Web Inspector: Add changes for Spectrum colorpicker
https://bugs.webkit.org/show_bug.cgi?id=75454

Patch by Brian Grinstead <briangrinstead@gmail.com> on 2012-02-01
Reviewed by Pavel Feldman.

* inspector/front-end/Color.js:
(WebInspector.Color.fromRGB):
* inspector/front-end/utilities.js:
(Element.prototype.totalOffsetLeft):
(Element.prototype.totalOffsetTop):
(Element.prototype.totalOffset):
(Element.prototype.scrollOffset):
():

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@107079 268f45cc-cd09-0410-ab3c-d52691b4dbfc