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

tools/perf/benchmarks/maps.py

Index: tools/perf/benchmarks/maps.py
diff --git a/tools/perf/benchmarks/maps.py b/tools/perf/benchmarks/maps.py
index e735d5b95445b6ede7a8659542e44c412c5e686e..feb5aa3ebab3b31925a9cb34cb95d484518eba2e 100644
--- a/tools/perf/benchmarks/maps.py
+++ b/tools/perf/benchmarks/maps.py
@@ -50,6 +50,10 @@ class MapsBenchmark(benchmark.Benchmark):
   """Basic Google Maps benchmarks."""
   test = _MapsMeasurement
 
+  @classmethod
+  def Name(cls):
+    return 'maps'
+
   def CreatePageSet(self, options):
     page_set_path = os.path.join(
         util.GetChromiumSrcDir(), 'tools', 'perf', 'page_sets')
@@ -63,5 +67,9 @@ class MapsNoVsync(MapsBenchmark):
   """Runs the Google Maps benchmark with Vsync disabled"""
   tag = 'novsync'
 
+  @classmethod
+  def Name(cls):
+    return 'maps.novsync'
+
   def CustomizeBrowserOptions(self, options):
     options.AppendExtraBrowserArgs('--disable-gpu-vsync')