Reviewed by Ryosuke Niwa.

        RefPtr misused as argument type in a few classes
        https://bugs.webkit.org/show_bug.cgi?id=62955

        * dom/DataTransferItem.cpp:
        (WebCore::DataTransferItem::DataTransferItem):
        * dom/DataTransferItem.h:
        * dom/DataTransferItems.cpp:
        (WebCore::DataTransferItems::DataTransferItems):
        * dom/DataTransferItems.h:
        * editing/CompositeEditCommand.cpp:
        (WebCore::CompositeEditCommand::rebalanceWhitespaceOnTextSubstring):
        * editing/CompositeEditCommand.h:
        * page/WebKitAnimationList.cpp:
        (WebCore::WebKitAnimationList::append):
        (WebCore::WebKitAnimationList::insertAnimation):
        * page/WebKitAnimationList.h:
        * svg/graphics/filters/SVGFEImage.cpp:
        (WebCore::FEImage::FEImage):
        (WebCore::FEImage::create):
        * svg/graphics/filters/SVGFEImage.h:
        * svg/graphics/filters/SVGFilterBuilder.cpp:
        (WebCore::SVGFilterBuilder::SVGFilterBuilder):
        (WebCore::SVGFilterBuilder::add):
        (WebCore::SVGFilterBuilder::appendEffectToEffectReferences):
        * svg/graphics/filters/SVGFilterBuilder.h:
        * websockets/ThreadableWebSocketChannelClientWrapper.cpp:
        (WebCore::ThreadableWebSocketChannelClientWrapper::didConnectCallback):
        (WebCore::ThreadableWebSocketChannelClientWrapper::didReceiveMessageCallback):
        (WebCore::ThreadableWebSocketChannelClientWrapper::didStartClosingHandshakeCallback):
        (WebCore::ThreadableWebSocketChannelClientWrapper::didCloseCallback):
        * websockets/ThreadableWebSocketChannelClientWrapper.h:
        * websockets/WorkerThreadableWebSocketChannel.cpp:
        (WebCore::WorkerThreadableWebSocketChannel::Peer::Peer):
        (WebCore::WorkerThreadableWebSocketChannel::Bridge::setWebSocketChannel):
        (WebCore::WorkerThreadableWebSocketChannel::Bridge::mainThreadCreateWebSocketChannel):
        * websockets/WorkerThreadableWebSocketChannel.h:
        Use PassRefPtr or raw pointer as appropriate for RefPtr arguments.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@89402 268f45cc-cd09-0410-ab3c-d52691b4dbfc