Enabled gpu_times metrics.

tools/perf/benchmarks/gpu_times.py

Index: tools/perf/benchmarks/gpu_times.py
diff --git a/tools/perf/benchmarks/gpu_times.py b/tools/perf/benchmarks/gpu_times.py
index 13915bbd969858627eb36919bfbc59409b19242f..374a0cc0dee9f762a2284d036c11eefcdfd74dc2 100644
--- a/tools/perf/benchmarks/gpu_times.py
+++ b/tools/perf/benchmarks/gpu_times.py
@@ -26,8 +26,12 @@ class _GPUTimes(benchmark.Benchmark):
         overhead_level=cat_filter,
         get_metrics_from_flags_callback=_GetGPUTimelineMetric)
 
+  @classmethod
+  def ValueCanBeAddedPredicate(cls, value):
+    return (isinstance(value, gpu_timeline.GPUTimelineListOfValues) or
+            isinstance(value, gpu_timeline.GPUTimelineValue))
+
 
-@benchmark.Disabled  # http://crbug.com/455292
 class GPUTimesKeyMobileSites(_GPUTimes):
   """Measures GPU timeline metric on key mobile sites."""
   page_set = page_sets.KeyMobileSitesSmoothPageSet
@@ -36,7 +40,7 @@ class GPUTimesKeyMobileSites(_GPUTimes):
   def Name(cls):
     return 'gpu_times.key_mobile_sites_smooth'
 
-@benchmark.Disabled  # http://crbug.com/455292
+
 class GPUTimesGpuRasterizationKeyMobileSites(_GPUTimes):
   """Measures GPU timeline metric on key mobile sites with GPU rasterization.
   """
@@ -48,7 +52,7 @@ class GPUTimesGpuRasterizationKeyMobileSites(_GPUTimes):
   def Name(cls):
     return 'gpu_times.gpu_rasterization.key_mobile_sites_smooth'
 
-@benchmark.Disabled  # http://crbug.com/453131, http://crbug.com/455292
+
 class GPUTimesTop25Sites(_GPUTimes):
   """Measures GPU timeline metric for the top 25 sites."""
   page_set = page_sets.Top25SmoothPageSet
@@ -57,7 +61,7 @@ class GPUTimesTop25Sites(_GPUTimes):
   def Name(cls):
     return 'gpu_times.top_25_smooth'
 
-@benchmark.Disabled  # http://crbug.com/455292
+
 class GPUTimesGpuRasterizationTop25Sites(_GPUTimes):
   """Measures GPU timeline metric for the top 25 sites with GPU rasterization.
   """