Partially revert https://crrev.com/7e53749df0a10f475404e86ef0ca8df02bb79e7a

src/heap/gc-tracer.h

Index: src/heap/gc-tracer.h
diff --git a/src/heap/gc-tracer.h b/src/heap/gc-tracer.h
index 811266e92e29c4fbf45fc980db58fe72eaec1ac4..9f383bf890f5ca30eb8568521260461806cc80dd 100644
--- a/src/heap/gc-tracer.h
+++ b/src/heap/gc-tracer.h
@@ -299,6 +299,8 @@ class GCTracer {
 
   typedef RingBuffer<SurvivalEvent, kRingBufferMaxSize> SurvivalEventBuffer;
 
+  static const int kThroughputTimeFrameMs = 5000;
+
   explicit GCTracer(Heap* heap);
 
   // Start collecting data.
@@ -416,6 +418,11 @@ class GCTracer {
   // Returns 0 if no allocation events have been recorded.
   size_t AllocationThroughputInBytesPerMillisecond(double time_ms) const;
 
+  // Allocation throughput in heap in bytes/milliseconds in
+  // the last five seconds.
+  // Returns 0 if no allocation events have been recorded.
+  size_t CurrentAllocationThroughputInBytesPerMillisecond() const;
+
   // Allocation throughput in old generation in bytes/milliseconds in
   // the last five seconds.
   // Returns 0 if no allocation events have been recorded.