To improve build efficiency, the metrics for critical path and
parallelism ratio is necessary. That information has been included in
soong.log, so added it into metrics as well.
Bug: 271526845
Test: build and check if metrics pb has critical path info
Change-Id: I14e1a78c13d400b792d3b05df18604da48759ade
This reverts commit 323dc60712.
Reason for revert: Possible cause of test instability
Bug: 170513220
Test: soong tests
Change-Id: Iee168e9fbb4210569e6cffcc23e60d111403abb8
Putting t.Parallel() in each test makes them run in parallel.
Additional t.Parallel() could be added to each subtest, although
that requires making a local copy of the loop variable for
table driven tests.
Test: m checkbuild
Change-Id: I5d9869ead441093f4d7c5757f2447385333a95a4
Keep a running map of the critical path to each edge as it
finishes. At the end of the build, find the edge with the
longest critical path and print the path to out/soong.log.
Test: critical_path_test.go
Change-Id: Ie01d26b068b768156b166bff00cdc3273e8124ca
