Double the API call rate threshold for the memory reducer to kick in

src/heap/memory-reducer.cc

Index: src/heap/memory-reducer.cc
diff --git a/src/heap/memory-reducer.cc b/src/heap/memory-reducer.cc
index 9fadd08dca3d1e564a96753b4f537885ca829d93..33e624978ffc21bfc584cace7a2bdbbd62302c84 100644
--- a/src/heap/memory-reducer.cc
+++ b/src/heap/memory-reducer.cc
@@ -24,7 +24,7 @@ MemoryReducer::TimerTask::TimerTask(MemoryReducer* memory_reducer)
 
 
 void MemoryReducer::TimerTask::RunInternal() {
-  const double kJsCallsPerMsThreshold = 0.25;
+  const double kJsCallsPerMsThreshold = 0.5;
   Heap* heap = memory_reducer_->heap();
   Event event;
   double time_ms = heap->MonotonicallyIncreasingTimeInMs();