Port memory.long_running_idle_gmail benchmarks to TBMv2.

tools/perf/benchmarks/memory.py

Index: tools/perf/benchmarks/memory.py
diff --git a/tools/perf/benchmarks/memory.py b/tools/perf/benchmarks/memory.py
index 85350d78c309799bb0e373ce14997ee9a6a68537..7da9c50b3e0648485416ea6dc8320ad0cc46ca73 100644
--- a/tools/perf/benchmarks/memory.py
+++ b/tools/perf/benchmarks/memory.py
@@ -37,14 +37,3 @@ class MemoryTop7Stress(perf_benchmark.PerfBenchmark):
   def ShouldDisable(cls, possible_browser):
     return cls.IsSvelte(possible_browser)  # http://crbug.com/555092
 
-
-@benchmark.Disabled('android')  # crbug.com/542682
-class MemoryLongRunningIdleGmailBackground(perf_benchmark.PerfBenchmark):
-  """Use (recorded) real world web sites and measure memory consumption
-  of long running idle Gmail page in background tab"""
-  test = memory.Memory
-  page_set = page_sets.LongRunningIdleGmailBackgroundPageSet
-
-  @classmethod
-  def Name(cls):
-    return 'memory.long_running_idle_gmail_background'