Use the trackSliceCache in grapher
Use the trackSliceCache in grapher

this is substantially easier now that the filename uniquely identifies a
track.

NProfileAnalysisComputationalTool/npact,NProfileAnalysisComputationalTool/npact,NProfileAnalysisComputationalTool/npact,NProfileAnalysisComputationalTool/npact,NProfileAnalysisComputationalTool/npact