[EFL] Enable the CUSTOM_SCHEME_HANDLER feature as default.

[EFL] Enable the CUSTOM_SCHEME_HANDLER feature as default.
https://bugs.webkit.org/show_bug.cgi?id=88608

Patch by Dongwoo Im <dw.im@samsung.com> on 2012-07-05
Reviewed by Hajime Morita.

.:

* Source/cmake/OptionsEfl.cmake: Enable the CUSTOM_SCHEME_HANDLER feature as default.

Source/WebKit2:

* WebProcess/WebCoreSupport/WebChromeClient.h:
(WebKit::WebChromeClient::isProtocolHandlerRegistered): Add a stub function.
(WebKit::WebChromeClient::unregisterProtocolHandler): Add a stub function.
(WebChromeClient):

Tools:

* Scripts/webkitperl/FeatureList.pm: Enable the CUSTOM_SCHEME_HANDLER feature as default.

LayoutTests:

* platform/efl/fast/dom/unregister-protocol-handler-expected.txt: Expected result of the EFL port.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121897 268f45cc-cd09-0410-ab3c-d52691b4dbfc