Clean up transitions in JniMethodEnd.

GoToRunnable() is never called for @FastNative, so
we can remove the path that calls GoToRunnableFast().

Add a call to GoToRunnableFast() for @FastNative in
GenericJniMethodEnd().

This is a follow-up to
    https://android-review.googlesource.com/1620969
that cleaned up JniMethodStart but missed similar
opportunity for the transition back to Runnable from
various JniMethodEnd methods.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 172332525
Change-Id: Ia519bfc6ea50c1b65241041a3af8b7d4b1027f77
1 file changed