[Oilpan] Re-enable OilpanGCTimes performance tests.

tools/perf/benchmarks/oilpan_gc_times.py

Index: tools/perf/benchmarks/oilpan_gc_times.py
diff --git a/tools/perf/benchmarks/oilpan_gc_times.py b/tools/perf/benchmarks/oilpan_gc_times.py
index 309cd6838ef6e2419b75f8900235ae53671c0109..afa5f0ac5522a06eaa10f54a09544e03613dcfc8 100644
--- a/tools/perf/benchmarks/oilpan_gc_times.py
+++ b/tools/perf/benchmarks/oilpan_gc_times.py
@@ -22,7 +22,7 @@ class OilpanGCTimesBlinkPerfAnimation(benchmark.Benchmark):
     return blink_perf.CreatePageSetFromPath(path, blink_perf.SKIPPED_FILE)
 
 
-@benchmark.Disabled
+@benchmark.Enabled('content-shell')
 class OilpanGCTimesBlinkPerfStress(benchmark.Benchmark):
   tag = 'blink_perf_stress'
   test = oilpan_gc_times.OilpanGCTimesForInternals
@@ -32,19 +32,18 @@ class OilpanGCTimesBlinkPerfStress(benchmark.Benchmark):
     return blink_perf.CreatePageSetFromPath(path, blink_perf.SKIPPED_FILE)
 
 
-@benchmark.Disabled
 class OilpanGCTimesSmoothnessAnimation(benchmark.Benchmark):
   test = oilpan_gc_times.OilpanGCTimesForSmoothness
   page_set = page_sets.ToughAnimationCasesPageSet
 
 
-@benchmark.Disabled
+@benchmark.Enabled('android')
 class OilpanGCTimesKeySilkCases(benchmark.Benchmark):
   test = oilpan_gc_times.OilpanGCTimesForSmoothness
   page_set = page_sets.KeySilkCasesPageSet
 
 
-@benchmark.Disabled
+@benchmark.Enabled('android')
 class OilpanGCTimesSyncScrollKeyMobileSites(benchmark.Benchmark):
   tag = 'sync_scroll'
   test = oilpan_gc_times.OilpanGCTimesForSmoothness