Additional macrobenchmark docs
Additional macrobenchmark docs

Test: preview docs in gerrit

Document signingConfig.debug, fix trace pulling script, and workaround for b/181899907

Trace pulling script written to account for upcoming fix for b/181601156

Also removed the non-Pixel device error, as that appears to be fixed
(b/181260845, though not to be confused with workaround linked above).

Change-Id: Iee86c4deae07ccc5ae862bd2cbbbe73b92556ccd

AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx