[wk2] Don't send intrinsic content size updates more than once per runloop
https://bugs.webkit.org/show_bug.cgi?id=113258
<rdar://problem/13492038>

Reviewed by Simon Fraser.

* WebProcess/WebPage/mac/TiledCoreAnimationDrawingArea.mm:
(WebKit::TiledCoreAnimationDrawingArea::mainFrameContentSizeChanged):
Only start the zero-delay timer if it's not already active.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146928 268f45cc-cd09-0410-ab3c-d52691b4dbfc
        <rdar://problem/13194263> Crashes in NetworkProcess due to threading issues
        https://bugs.webkit.org/show_bug.cgi?id=113256

        Reviewed by Brady Eidson.

        Added a new code path in ResourceHandle/ResourceHandleClient that doesn't need
        blocking calls. Implemented it for NSURLConnection by changing NSOperationQueue
        version to forward calls to main thread.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146929 268f45cc-cd09-0410-ab3c-d52691b4dbfc