Rename telemetry.test.Test to telemetry.benchmark.Benchmark.

tools/perf/benchmarks/memory.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-from telemetry import test
+from telemetry import benchmark
 
 from measurements import memory
 import page_sets
 
 
-@test.Disabled('android')  # crbug.com/370977
-class MemoryMobile(test.Test):
+@benchmark.Disabled('android')  # crbug.com/370977
+class MemoryMobile(benchmark.Benchmark):
   test = memory.Memory
   page_set = page_sets.MobileMemoryPageSet
 
 
-class MemoryTop25(test.Test):
+class MemoryTop25(benchmark.Benchmark):
   test = memory.Memory
   page_set = page_sets.Top25PageSet
 
 
-class Reload2012Q3(test.Test):
+class Reload2012Q3(benchmark.Benchmark):
   tag = 'reload'
   test = memory.Memory
   page_set = page_sets.Top2012Q3PageSet
 
 
-@test.Disabled('android')  # crbug.com/371153
-class MemoryToughDomMemoryCases(test.Test):
+@benchmark.Disabled('android')  # crbug.com/371153
+class MemoryToughDomMemoryCases(benchmark.Benchmark):
   test = memory.Memory
   page_set = page_sets.ToughDomMemoryCasesPageSet