Reviewed by Dave.
- clean room rewrite of QCString::operator<<. * kwq/KWQCString.mm: (operator<<): Rewrote it. - update format of render tree dumping for real use * khtml/rendering/render_layer.h: Added elementList(). * khtml/rendering/render_layer.cpp: (RenderLayer::elementList): Added. * kwq/KWQRenderTreeDebug.cpp: (operator<<): Added an overload for writing out QRect. (writeIndent): Added. (write): Use the overload for QRect, also reorganize to dump layers. (writeLayers): Use this to dump the layers. (externalRepresentation): Call writeLayers instead of write. git-svn-id: http://svn.webkit.org/repository/webkit/trunk@3350 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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