Make 'this' evaluate to the correct object when paused in the Debugger.

https://webkit.org/b/113607
rdar://problem/13538351

Reviewed by Joseph Pecoraro.

Source/WebCore:

* inspector/InjectedScriptSource.js:
(InjectedScript.prototype._evaluateOn): Bind 'this' to the expression function.

LayoutTests:

* platform/mac/http/tests/inspector/console-resource-errors-expected.txt:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147356 268f45cc-cd09-0410-ab3c-d52691b4dbfc