BUG: 24872993 Change-Id: Ia47ad51140f7e384822eea9d5de46c9f51ceda11
This makes the import path less confusing: * metrics/metrics_library.h is imported from the exported headers. * metricsd/* for includes by the metrics daemon itself. BUG: 22879597 Change-Id: I9f44ea3a548cae39d4546fcd724e8007f6dd4bd0