Web Inspector: keep deprecated function stubs in InspectorFrontendHost.
https://bugs.webkit.org/show_bug.cgi?id=112347

Reviewed by Vsevolod Vlasov.

In order to open older front-ends in newer hosts, we need to keep stubs
for deprecated functions. Longer term, we need to wrap all calls to InspectorFrontendHost in the front-end.

* inspector/InspectorFrontendHost.cpp:
(WebCore::InspectorFrontendHost::canInspectWorkers):
(WebCore):
(WebCore::InspectorFrontendHost::hiddenPanels):
* inspector/InspectorFrontendHost.h:
(InspectorFrontendHost):
* inspector/InspectorFrontendHost.idl:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145816 268f45cc-cd09-0410-ab3c-d52691b4dbfc