Revert of 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 7da9c50b3e0648485416ea6dc8320ad0cc46ca73..85350d78c309799bb0e373ce14997ee9a6a68537 100644
--- a/tools/perf/benchmarks/memory.py
+++ b/tools/perf/benchmarks/memory.py
@@ -37,3 +37,14 @@
   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'