Add architecture for simulating memory pressure notifications in all processes

content/browser/memory/memory_pressure_controller.h

Index: content/browser/memory/memory_pressure_controller.h
diff --git a/content/browser/memory/memory_pressure_controller.h b/content/browser/memory/memory_pressure_controller.h
index 848b2d41a1b6aae3615ce7f0accc51da16a90c59..6a7285be7cf7ba77486da29da47ce3f6cc617c1f 100644
--- a/content/browser/memory/memory_pressure_controller.h
+++ b/content/browser/memory/memory_pressure_controller.h
@@ -8,6 +8,7 @@
 #include <set>
 
 #include "base/callback.h"
+#include "base/memory/memory_pressure_listener.h"
 #include "base/memory/singleton.h"
 #include "content/common/content_export.h"
 
@@ -15,14 +16,18 @@ namespace content {
 
 class MemoryMessageFilter;
 
+using MemoryPressureLevel = base::MemoryPressureListener::MemoryPressureLevel;
+using MemoryMessageFilterSet = std::set<scoped_refptr<MemoryMessageFilter>>;

[Primiano Tucci (use gerrit), 2015/09/28 12:47:32]

ditto here. ALso, this is now duplicating the alias.
At very least move the using MemoryMessageFilterSet back where the typedef was.

[petrcermak, 2015/09/28 15:39:32]

Done.

+
 class CONTENT_EXPORT MemoryPressureController {
  public:
   // These methods must be called on the IO thread.
   void OnMemoryMessageFilterAdded(MemoryMessageFilter* filter);
   void OnMemoryMessageFilterRemoved(MemoryMessageFilter* filter);
 
-  // This method can be called from any thread.
+  // These methods can be called from any thread.
   void SetPressureNotificationsSuppressedInAllProcesses(bool suppressed);
+  void SimulatePressureNotificationInAllProcesses(MemoryPressureLevel level);
 
   // This method can be called from any thread.
   static MemoryPressureController* GetInstance();
@@ -37,7 +42,6 @@ class CONTENT_EXPORT MemoryPressureController {
 
   // Set of all memory message filters in the browser process. Always accessed
   // on the IO thread.
-  typedef std::set<scoped_refptr<MemoryMessageFilter>> MemoryMessageFilterSet;
   MemoryMessageFilterSet memory_message_filters_;
 
   DISALLOW_COPY_AND_ASSIGN(MemoryPressureController);