[tools/perf] Explicitly disable state tear down on some benchmarks

tools/perf/benchmarks/memory_infra.py

Index: tools/perf/benchmarks/memory_infra.py
diff --git a/tools/perf/benchmarks/memory_infra.py b/tools/perf/benchmarks/memory_infra.py
index ce8f3516e0280851509f93c9741c528a6f157c8d..f79f1007b7bcfa4fb3695506391187b983da46c6 100644
--- a/tools/perf/benchmarks/memory_infra.py
+++ b/tools/perf/benchmarks/memory_infra.py
@@ -62,6 +62,10 @@ class MemoryBenchmarkTop10Mobile(_MemoryInfra):
     return 'memory.top_10_mobile'
 
   @classmethod
+  def ShouldTearDownStateAfterEachStoryRun(cls):
+    return False

[perezju, 2016/09/02 09:31:36]

I've just realized we cannot tear down the state on this benchmark since it also
measures background memory usage, and a dead browser won't be of use for that.
:(

+
+  @classmethod
   def ShouldDisable(cls, possible_browser):
     # TODO(crbug.com/586148): Benchmark should not depend on DeskClock app.
     return not possible_browser.platform.CanLaunchApplication(
@@ -87,6 +91,10 @@ class MemoryBenchmarkTop10MobileStress(MemoryBenchmarkTop10Mobile):
     return 'memory.top_10_mobile_stress'
 
   @classmethod
+  def ShouldTearDownStateAfterEachStoryRun(cls):
+    return False

[petrcermak, 2016/09/02 09:40:55]

You don't need this here because the class inherits from
MemoryBenchmarkTop10Mobile.

[perezju, 2016/09/02 10:53:37]

Good catch.

+
+  @classmethod
   def ShouldTearDownStateAfterEachStorySetRun(cls):
     return False
 
@@ -108,6 +116,10 @@ class DualBrowserBenchmark(_MemoryInfra):
     return 'memory.dual_browser_test'
 
   @classmethod
+  def ShouldTearDownStateAfterEachStoryRun(cls):
+    return False
+
+  @classmethod
   def ValueCanBeAddedPredicate(cls, value, is_first_result):
     # TODO(crbug.com/610962): Remove this stopgap when the perf dashboard
     # is able to cope with the data load generated by TBMv2 metrics.
@@ -130,6 +142,10 @@ class LongRunningDualBrowserBenchmark(_MemoryInfra):
     return 'memory.long_running_dual_browser_test'
 
   @classmethod
+  def ShouldTearDownStateAfterEachStoryRun(cls):
+    return False
+
+  @classmethod
   def ShouldTearDownStateAfterEachStorySetRun(cls):
     return False