Build break on the EFL port since r173163
https://bugs.webkit.org/show_bug.cgi?id=136443

Unreviewed build fix.

Patch by Ryuan Choi <ryuan.choi@gmail.com> on 2014-09-01

* UIProcess/BackingStore.cpp:
(WebKit::BackingStore::BackingStore):
* UIProcess/BackingStore.h:
* UIProcess/CoordinatedGraphics/CoordinatedDrawingAreaProxy.cpp:
(WebKit::CoordinatedDrawingAreaProxy::CoordinatedDrawingAreaProxy):
(WebKit::CoordinatedDrawingAreaProxy::updateViewport):
(WebKit::CoordinatedDrawingAreaProxy::contentsRect):
(WebKit::CoordinatedDrawingAreaProxy::update):
(WebKit::CoordinatedDrawingAreaProxy::didUpdateBackingStoreState):
(WebKit::CoordinatedDrawingAreaProxy::incorporateUpdate):
(WebKit::CoordinatedDrawingAreaProxy::sendUpdateBackingStoreState):
(WebKit::CoordinatedDrawingAreaProxy::waitForAndDispatchDidUpdateBackingStoreState):
(WebKit::CoordinatedDrawingAreaProxy::enterAcceleratedCompositingMode):
(WebKit::CoordinatedDrawingAreaProxy::exitAcceleratedCompositingMode):
(WebKit::CoordinatedDrawingAreaProxy::updateAcceleratedCompositingMode):
* UIProcess/CoordinatedGraphics/CoordinatedDrawingAreaProxy.h:
(WebKit::CoordinatedDrawingAreaProxy::page):
* UIProcess/CoordinatedGraphics/CoordinatedLayerTreeHostProxy.cpp:
(WebKit::CoordinatedLayerTreeHostProxy::CoordinatedLayerTreeHostProxy):
(WebKit::CoordinatedLayerTreeHostProxy::~CoordinatedLayerTreeHostProxy):
(WebKit::CoordinatedLayerTreeHostProxy::commitCoordinatedGraphicsState):
(WebKit::CoordinatedLayerTreeHostProxy::setVisibleContentsRect):
(WebKit::CoordinatedLayerTreeHostProxy::renderNextFrame):
(WebKit::CoordinatedLayerTreeHostProxy::purgeBackingStores):
(WebKit::CoordinatedLayerTreeHostProxy::commitScrollOffset):
* UIProcess/CoordinatedGraphics/WebView.cpp:
(WebKit::WebView::createDrawingAreaProxy):
* UIProcess/cairo/BackingStoreCairo.cpp:
(WebKit::BackingStore::incorporateUpdate):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@173166 268f45cc-cd09-0410-ab3c-d52691b4dbfc