Fixed the build following AppKit API deprecations in a recent SDKs

Fixed the build following AppKit API deprecations in a recent SDKs

Source/WebCore:

* platform/mac/PasteboardMac.mm:
(WebCore::setDragImageImpl): Suppressed deprecation warnings.
* platform/mac/WidgetMac.mm:
(WebCore::Widget::paint): Ditto.

Source/WebKitLegacy/mac:

* WebView/WebFullScreenController.mm:
(-[WebFullScreenController enterFullScreen:]): Suppressed deprecation warnings.
(-[WebFullScreenController exitFullScreen]): Ditto.
(-[WebFullScreenController _startEnterFullScreenAnimationWithDuration:]): Ditto.
(-[WebFullScreenController _startExitFullScreenAnimationWithDuration:]): Ditto.
* WebView/WebHTMLView.mm:
(-[WebHTMLView drawRect:]): Ditto.
(-[WebHTMLView _endPrintModeAndRestoreWindowAutodisplay]): Ditto.
(-[WebHTMLView knowsPageRange:]): Ditto.
* WebView/WebView.mm:
(LayerFlushController::flushLayers): Ditto.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@226452 268f45cc-cd09-0410-ab3c-d52691b4dbfc