setSourceOperation  107 Source/core/clipboard/Clipboard.h     void setSourceOperation(DragOperation);
setSourceOperation  222 Source/core/page/DragController.cpp         clipboard->setSourceOperation(dragData->draggingSourceOperationMask());
setSourceOperation  247 Source/core/page/DragController.cpp             clipboard->setSourceOperation(dragData->draggingSourceOperationMask());
setSourceOperation  601 Source/core/page/DragController.cpp     clipboard->setSourceOperation(srcOpMask);