Re-enable last remaining key_silk_cases tests on Android

tools/perf/benchmarks/thread_times.py

Index: tools/perf/benchmarks/thread_times.py
diff --git a/tools/perf/benchmarks/thread_times.py b/tools/perf/benchmarks/thread_times.py
index 06fb468b50c886b91baa7bed1d2f2a695eefbf42..a2d97aa34efd9249a0029ea9602b2973231afd88 100644
--- a/tools/perf/benchmarks/thread_times.py
+++ b/tools/perf/benchmarks/thread_times.py
@@ -7,7 +7,6 @@ from benchmarks import silk_flags
 from measurements import thread_times
 
 
-@test.Disabled('android')  # crbug.com/355952
 class ThreadTimesKeySilkCases(test.Test):
   """Measures timeline metrics while performing smoothness action on key silk
   cases."""
@@ -16,7 +15,6 @@ class ThreadTimesKeySilkCases(test.Test):
   options = {"report_silk_results": True}
 
 
-@test.Disabled('android')  # crbug.com/355952
 class ThreadTimesFastPathKeySilkCases(test.Test):
   """Measures timeline metrics while performing smoothness action on key silk
   cases using bleeding edge rendering fast paths."""