BackwardDeletion  320 Source/core/dom/Position.cpp         case BackwardDeletion:
BackwardDeletion  332 Source/core/dom/Position.cpp     ASSERT(moveType != BackwardDeletion);
BackwardDeletion  472 Source/core/editing/TypingCommand.cpp             selectionToDelete.setWithoutValidation(selectionToDelete.end(), selectionToDelete.end().previous(BackwardDeletion));