<https://bugs.webkit.org/show_bug.cgi?id=42538>

Reviewed by Sam Weinig.

WebKitTestRunner needs layoutTestController.isCommandEnabled
<https://bugs.webkit.org/show_bug.cgi?id=42671>

WebKit2: 

* WebProcess/InjectedBundle/API/c/WKBundlePage.cpp:
(WKBundlePageExecuteEditingCommand): Added.
(WKBundlePageIsEditingCommandEnabled): Added.
* WebProcess/InjectedBundle/API/c/WKBundlePagePrivate.h: Ditto.

* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::executeEditingCommand): Added.
(WebKit::WebPage::isEditingCommandEnabled): Added.
* WebProcess/WebPage/WebPage.h: Ditto.

WebKitTools: 

* WebKitTestRunner/InjectedBundle/Bindings/LayoutTestController.idl:
Added execCommand and isCommandEnabled.
* WebKitTestRunner/InjectedBundle/LayoutTestController.cpp:
(WTR::LayoutTestController::execCommand): Added.
(WTR::LayoutTestController::isCommandEnabled): Added.
* WebKitTestRunner/InjectedBundle/LayoutTestController.h: Ditto.

LayoutTests: 

* platform/mac-wk2/Skipped: Don't skip the now-functioning tests.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@64251 268f45cc-cd09-0410-ab3c-d52691b4dbfc