remove build warning(unused parameter)
https://bugs.webkit.org/show_bug.cgi?id=114670

Patch by Xuefei Ren <xren@blackberry.com> on 2013-04-18
Reviewed by Rob Buis.

remove build warning in Source/WebKit/blackberry/Api

* Api/BackingStore.cpp:
(BlackBerry::WebKit::BackingStorePrivate::scroll):
(BlackBerry::WebKit::BackingStorePrivate::clearAndUpdateTileOfNotRenderedRegion):
(BlackBerry::WebKit::BackingStorePrivate::paintDefaultBackground):
(BlackBerry::WebKit::BackingStorePrivate::blitTileRect):
(BlackBerry::WebKit::BackingStorePrivate::actualVisibleSizeChanged):
* Api/BlackBerryGlobal.cpp:
(BlackBerry::WebKit::clearAppCache):
(BlackBerry::WebKit::clearDatabase):
* Api/WebOverlay.cpp:
(BlackBerry::WebKit::WebOverlayPrivateWebKitThread::setContentsToImage):
(BlackBerry::WebKit::WebOverlayLayerCompositingThreadClient::layerVisibilityChanged):
(BlackBerry::WebKit::WebOverlayLayerCompositingThreadClient::drawTextures):
(BlackBerry::WebKit::WebOverlayPrivateCompositingThread::setContentsToImage):
* Api/WebPage.cpp:
(BlackBerry::WebKit::WebPage::setCaretHighlightStyle):
* Api/WebPageCompositor.cpp:
(BlackBerry::WebKit::WebPageCompositor::cleanup):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148676 268f45cc-cd09-0410-ab3c-d52691b4dbfc