memory coordinator: Throttle background renderers on Android

content/browser/memory/memory_coordinator.h

Index: content/browser/memory/memory_coordinator.h
diff --git a/content/browser/memory/memory_coordinator.h b/content/browser/memory/memory_coordinator.h
index 4934bb8494cdbe31e9cf44336ef3877030ab00d8..211406853f459d4f2ab306b6b28070b0b13b0d4a 100644
--- a/content/browser/memory/memory_coordinator.h
+++ b/content/browser/memory/memory_coordinator.h
@@ -100,7 +100,7 @@ class CONTENT_EXPORT MemoryCoordinator {
 
   ChildInfoMap& children() { return children_; }
 
-private:
+ private:
 #if !defined(OS_MACOSX)
   FRIEND_TEST_ALL_PREFIXES(MemoryCoordinatorTest, HandleAdded);
   FRIEND_TEST_ALL_PREFIXES(MemoryCoordinatorTest, CanSuspendRenderer);
@@ -108,6 +108,12 @@ private:
 #endif
   FRIEND_TEST_ALL_PREFIXES(MemoryCoordinatorTest,
                            ChildRemovedOnConnectionError);
+  FRIEND_TEST_ALL_PREFIXES(MemoryCoordinatorTest, SetChildMemoryState);
+
+  // Called by SetChildMemoryState() to determine a child memory state based on
+  // the current status of the child process.
+  mojom::MemoryState OverrideChildState(mojom::MemoryState memroy_state,
+                                        const ChildInfo& child);
 
   void SetDelegateForTesting(
       std::unique_ptr<MemoryCoordinatorDelegate> delegate);