NotForReview: Expose the global memory budget (chromium side)

content/browser/memory/memory_condition_observer.h

Index: content/browser/memory/memory_condition_observer.h
diff --git a/content/browser/memory/memory_condition_observer.h b/content/browser/memory/memory_condition_observer.h
index 40982ff7152952db7b10ea637940cc41d2ef9339..a01fb66f76d03c0b760681ab9ced9229bdc24d4d 100644
--- a/content/browser/memory/memory_condition_observer.h
+++ b/content/browser/memory/memory_condition_observer.h
@@ -30,8 +30,8 @@ class CONTENT_EXPORT MemoryConditionObserver {
   ~MemoryConditionObserver();
 
   // Schedules a task to update memory condition. The task will be executed
-  // after |delay| has passed.
-  void ScheduleUpdateCondition(base::TimeDelta delay);
+  // at a given interval.
+  void ScheduleUpdateCondition(base::TimeDelta interval);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(MemoryCoordinatorImplTest, CalculateNextCondition);
@@ -50,6 +50,13 @@ class CONTENT_EXPORT MemoryConditionObserver {
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   base::CancelableClosure update_condition_closure_;
 
+  // Current available free memory provided by MemoryMonitor.
+  int current_available_;
+
+  // The maximum value of available free memory. Used to simulate memory
+  // pressure.
+  int max_available_;
+
   // Sets up parameters for the heuristic.
   void InitializeParameters();