[Cocoa] Expose WebPageProxy::close
https://bugs.webkit.org/show_bug.cgi?id=130068

Reviewed by Adele Peterson.

* UIProcess/API/Cocoa/WKWebView.mm:
(-[WKWebView _close]):
* UIProcess/API/Cocoa/WKWebViewPrivate.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@165434 268f45cc-cd09-0410-ab3c-d52691b4dbfc
REGRESSION(r165407): DoYouEvenBench crashes in DRT
https://bugs.webkit.org/show_bug.cgi?id=130066

Reviewed by Geoffrey Garen.

The baseline JIT does a conditional store barrier for the put_by_id, but we need
an unconditional store barrier so that we cover the butterfly case as well in emitPutTransitionStub.

* jit/JIT.h:
* jit/JITPropertyAccess.cpp:
(JSC::JIT::emit_op_put_by_id):
(JSC::JIT::emitWriteBarrier):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@165435 268f45cc-cd09-0410-ab3c-d52691b4dbfc