Auto merge of #22808 - servo:jdm-patch-10, r=asajeffrey
Auto merge of #22808 - servo:jdm-patch-10, r=asajeffrey

Avoid locking network timing data unnecessarily.

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pyfisch/servo,notriddle/servo,peterjoel/servo,szeged/servo,splav/servo,notriddle/servo,notriddle/servo,larsbergstrom/servo,paulrouget/servo,paulrouget/servo,paulrouget/servo,saneyuki/servo,pyfisch/servo,pyfisch/servo,DominoTree/servo,splav/servo,notriddle/servo,paulrouget/servo,peterjoel/servo,saneyuki/servo,KiChjang/servo,emilio/servo,nnethercote/servo,DominoTree/servo,peterjoel/servo,szeged/servo,emilio/servo,saneyuki/servo,saneyuki/servo,splav/servo,szeged/servo,KiChjang/servo,larsbergstrom/servo,splav/servo,szeged/servo,nnethercote/servo,emilio/servo,saneyuki/servo,notriddle/servo,larsbergstrom/servo,larsbergstrom/servo,emilio/servo,nnethercote/servo,paulrouget/servo,splav/servo,KiChjang/servo,larsbergstrom/servo,szeged/servo,DominoTree/servo,KiChjang/servo,nnethercote/servo,peterjoel/servo,larsbergstrom/servo,peterjoel/servo,szeged/servo,emilio/servo,saneyuki/servo,paulrouget/servo,peterjoel/servo,pyfisch/servo,splav/servo,DominoTree/servo,peterjoel/servo,saneyuki/servo,szeged/servo,KiChjang/servo,KiChjang/servo,peterjoel/servo,DominoTree/servo,saneyuki/servo,splav/servo,emilio/servo,peterjoel/servo,emilio/servo,KiChjang/servo,notriddle/servo,splav/servo,szeged/servo,nnethercote/servo,paulrouget/servo,notriddle/servo,KiChjang/servo,larsbergstrom/servo,emilio/servo,saneyuki/servo,larsbergstrom/servo,larsbergstrom/servo,emilio/servo,peterjoel/servo,DominoTree/servo,paulrouget/servo,KiChjang/servo,DominoTree/servo,pyfisch/servo,KiChjang/servo,nnethercote/servo,notriddle/servo,splav/servo,notriddle/servo,pyfisch/servo,notriddle/servo,nnethercote/servo,pyfisch/servo,splav/servo,nnethercote/servo,szeged/servo,pyfisch/servo,pyfisch/servo,DominoTree/servo,szeged/servo,larsbergstrom/servo,nnethercote/servo,DominoTree/servo,nnethercote/servo,DominoTree/servo,emilio/servo,paulrouget/servo,pyfisch/servo,saneyuki/servo,paulrouget/servo