Add background stories to MobileSystemHealth

tools/perf/benchmarks/system_health.py

Index: tools/perf/benchmarks/system_health.py
diff --git a/tools/perf/benchmarks/system_health.py b/tools/perf/benchmarks/system_health.py
index 75862ea6200a45a1d08170a9e72728d9a5c160be..9dd96996c10400fbf1e411d3b6737adb386eb441 100644
--- a/tools/perf/benchmarks/system_health.py
+++ b/tools/perf/benchmarks/system_health.py
@@ -99,8 +99,15 @@ class _MemorySystemHealthBenchmark(perf_benchmark.PerfBenchmark):
     return options
 
   def CreateStorySet(self, options):
-    return page_sets.SystemHealthStorySet(platform=self.PLATFORM,
-                                          take_memory_measurement=True)
+    measure_in_background = self.ShouldBackgroundChrome()
+    return page_sets.SystemHealthStorySet(
+        platform=self.PLATFORM,
+        take_memory_measurement=True,
+        measure_in_background=measure_in_background)
+
+  @classmethod
+  def ShouldBackgroundChrome(cls):
+    return False
 
   @classmethod
   def ShouldTearDownStateAfterEachStoryRun(cls):
@@ -108,7 +115,10 @@ class _MemorySystemHealthBenchmark(perf_benchmark.PerfBenchmark):
 
   @classmethod
   def Name(cls):
-    return 'system_health.memory_%s' % cls.PLATFORM
+    if cls.ShouldBackgroundChrome():
+      return 'system_health.memory_%s_background' % cls.PLATFORM
+    else:
+      return 'system_health.memory_%s' % cls.PLATFORM

[perezju, 2016/10/05 13:14:54]

Instead of adding a new benchmark, I think we should add a new story group (or
groups), e.g. like the current browse:news or load:media, named maybe something
like background:news, background:media, etc.

[perezju, 2016/10/05 13:18:10]

Ignore that comment. Noise from a previous draft I never actually sent.

 
   @classmethod
   def ValueCanBeAddedPredicate(cls, value, is_first_result):
@@ -141,6 +151,13 @@ class MobileMemorySystemHealth(_MemorySystemHealthBenchmark):
 
     return possible_browser.platform.GetDeviceTypeName() == 'Desktop'
 
+class MobileMemoryBackgroundSystemHealth(MobileMemorySystemHealth):
+  """Mobile Chrome Background Memory System Health Benchmark."""
+  PLATFORM = 'mobile'
+
+  @classmethod
+  def ShouldBackgroundChrome(cls):
+    return True
 
 @benchmark.Enabled('android-webview')
 class WebviewStartupSystemHealthBenchmark(perf_benchmark.PerfBenchmark):