Add 90th and 95th percentile to ManualBenchmarkState

Test: m ActivityManagerPerfTestsTestApp ActivityManagerPerfTests
Test: adb install \
$OUT/data/app/ActivityManagerPerfTestsTestApp/ActivityManagerPerfTestsTestApp.apk
Test: adb install \
$OUT/data/app/ActivityManagerPerfTests/ActivityManagerPerfTests.apk
Test: adb shell am instrument -w -e class \
com.android.frameworks.perftests.am.tests.BroadcastPerfTest \
com.android.frameworks.perftests.amtests/android.support.test.runner.AndroidJUnitRunner

BUG: 67460485
Change-Id: I3da7079758b0f8c123d354780f310f357886543c