[EFL] Emit "resource,request,willsend" from ewk_view.

[EFL] Emit "resource,request,willsend" from ewk_view.
https://bugs.webkit.org/show_bug.cgi?id=76292

Reviewed by Andreas Kling.

Make ewk_view dispatch the "resource,request,willsend" signal as well,
so that it is possible to know whether the request is for the main
frame itself or for anything else.

* WebCoreSupport/FrameLoaderClientEfl.cpp:
(WebCore::FrameLoaderClientEfl::dispatchWillSendRequest):
* ewk/ewk_view.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105152 268f45cc-cd09-0410-ab3c-d52691b4dbfc