Merge "Refactor interactive microbenchmarks"

startop/apps/test/Android.bp

startop/apps/test/AndroidManifest.xml

startop/apps/test/src/CPUIntensiveBenchmarkActivity.java

...top/apps/test/src/InitCheckOverheadBenchmarkActivity.java

startop/apps/test/src/InteractiveMicrobenchmarkActivity.java

...p/apps/test/src/NonInteractiveMicrobenchmarkActivity.java

startop/apps/test/src/SystemServerBenchmarks.java