Revert of [tools/perf] Disable page_cycler_v2.typical_25 benchmark

tools/perf/benchmarks/page_cycler_v2.py

Index: tools/perf/benchmarks/page_cycler_v2.py
diff --git a/tools/perf/benchmarks/page_cycler_v2.py b/tools/perf/benchmarks/page_cycler_v2.py
index e05c5f6e7fcb14232837f3caad9d00e418a02243..bdb7fc4b721c0aa6ed65a4566cb2849b372e6bb0 100644
--- a/tools/perf/benchmarks/page_cycler_v2.py
+++ b/tools/perf/benchmarks/page_cycler_v2.py
@@ -11,11 +11,9 @@
 from core import perf_benchmark
 import page_sets
 
-from telemetry import benchmark
 from telemetry.page import cache_temperature
 from telemetry.timeline import tracing_category_filter
 from telemetry.web_perf import timeline_based_measurement
-
 
 class _PageCyclerV2(perf_benchmark.PerfBenchmark):
   def CreateTimelineBasedMeasurementOptions(self):
@@ -27,8 +25,6 @@
     tbm_options.SetTimelineBasedMetric('firstPaintMetric')
     return tbm_options
 
-
-@benchmark.Disabled('all')  # crbug.com/615178
 class PageCyclerV2Typical25(_PageCyclerV2):
   """Page load time benchmark for a 25 typical web pages.