[EFL] DRT should support LayoutTestController's willSendRequestReturnsNull()

[EFL] DRT should support LayoutTestController's willSendRequestReturnsNull()
https://bugs.webkit.org/show_bug.cgi?id=82443

Patch by Christophe Dumez <christophe.dumez@intel.com> on 2012-04-10
Reviewed by Philippe Normand.

Tools:

EFL's DRT needs to support LayoutTestController's
willSendRequestReturnsNull() and return NULL when expected. This
allows for several tests to be removed from the skip list.

* DumpRenderTree/efl/DumpRenderTreeChrome.cpp:
(DumpRenderTreeChrome::onWillSendRequest):

LayoutTests:

Unskip tests which depend on EFL's DumpRenderTree support for
LayoutTestController's willSendRequestReturnsNull(), now that it is
implemented.

* platform/efl/Skipped:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@113722 268f45cc-cd09-0410-ab3c-d52691b4dbfc