[Telemetry] Explicitly define Name() method for all perf benchmarks

tools/perf/benchmarks/spaceport.py

Index: tools/perf/benchmarks/spaceport.py
diff --git a/tools/perf/benchmarks/spaceport.py b/tools/perf/benchmarks/spaceport.py
index 5837a06b6cee40c7c5f8e845b220460980051b85..985e20f315bc300d1c05dd0dff4807dc19ada0d5 100644
--- a/tools/perf/benchmarks/spaceport.py
+++ b/tools/perf/benchmarks/spaceport.py
@@ -107,6 +107,10 @@ class Spaceport(benchmark.Benchmark):
   """
   test = _SpaceportMeasurement
 
+  @classmethod
+  def Name(cls):
+    return 'spaceport'
+
   def CreatePageSet(self, options):
     spaceport_dir = os.path.join(util.GetChromiumSrcDir(), 'chrome', 'test',
         'data', 'third_party', 'spaceport')