Make memory pressure notifier configurable

base/memory/memory_pressure_monitor_chromeos.h

Index: base/memory/memory_pressure_monitor_chromeos.h
diff --git a/base/memory/memory_pressure_monitor_chromeos.h b/base/memory/memory_pressure_monitor_chromeos.h
index 5529c3b48a35857ddb1f923671a8850589354a5a..40697011092d6733df1d27db95358141ca536332 100644
--- a/base/memory/memory_pressure_monitor_chromeos.h
+++ b/base/memory/memory_pressure_monitor_chromeos.h
@@ -61,6 +61,8 @@ class BASE_EXPORT MemoryPressureMonitor : public base::MemoryPressureMonitor {
   MemoryPressureListener::MemoryPressureLevel GetCurrentPressureLevel() const
       override;
 
+  void SetDispatchCallback(DispatchCallback callback) override;

[danakj, 2016/07/08 00:03:53]

nit: normally all overrides for a class are grouped into one block (no
whitespace), with a "ThisOtherClass implementation." comment or the like on the
top of them.

[bashi, 2016/07/08 00:13:05]

Acknowledged.

+
   // Returns a type-casted version of the current memory pressure monitor. A
   // simple wrapper to base::MemoryPressureMonitor::Get.
   static MemoryPressureMonitor* Get();
@@ -107,6 +109,9 @@ class BASE_EXPORT MemoryPressureMonitor : public base::MemoryPressureMonitor {
   // File descriptor used to detect low memory condition.
   ScopedFD low_mem_file_;
 
+  DispatchCallback dispatch_callback_ =
+      &MemoryPressureListener::NotifyMemoryPressure;
+
   base::WeakPtrFactory<MemoryPressureMonitor> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MemoryPressureMonitor);