Fix problem when ContextMenuItemSelected callback is not called when it should.
Fix problem when ContextMenuItemSelected callback is not called when it should.

Issue: CBWEBVIEW-855
Repairing [UnitTest] Unit test Fail - ewk_context_menu_item_link_url_get
Change-Id: I0bfbd38ae611956dafccc7463c4c1ba9e4661dc9

hgl888/chromium-efl,hgl888/chromium-efl,hgl888/chromium-efl,crosswalk-project/chromium-efl,crosswalk-project/chromium-efl,hgl888/chromium-efl,crosswalk-project/chromium-efl,crosswalk-project/chromium-efl,hgl888/chromium-efl