Add architecture for simulating memory pressure notifications in all processes

content/browser/memory/memory_message_filter.cc

Index: content/browser/memory/memory_message_filter.cc
diff --git a/content/browser/memory/memory_message_filter.cc b/content/browser/memory/memory_message_filter.cc
index b386717789ea162798019087a797fc22258c309c..8f6fe489bfec1c184a7be9e44254d479df7eb04b 100644
--- a/content/browser/memory/memory_message_filter.cc
+++ b/content/browser/memory/memory_message_filter.cc
@@ -31,4 +31,9 @@ void MemoryMessageFilter::SendSetPressureNotificationsSuppressed(
   Send(new MemoryMsg_SetPressureNotificationsSuppressed(suppressed));
 }
 
+void MemoryMessageFilter::SendSimulatePressureNotification(
+    base::MemoryPressureListener::MemoryPressureLevel level) {
+  Send(new MemoryMsg_SimulatePressureNotification(level));
+}
+
 }  // namespace content