Partially revert 5aacee to see its impact on memory histograms.

src/heap/heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/base/bits.h"
 #include "src/base/once.h"
@@ skipping 4932 matching lines @@
   double idle_time_in_ms = deadline_in_ms - start_ms;
   double current_time = MonotonicallyIncreasingTimeInMs();
   last_idle_notification_time_ = current_time;
   double deadline_difference = deadline_in_ms - current_time;
 
   contexts_disposed_ = 0;
 
   isolate()->counters()->gc_idle_time_allotted_in_ms()->AddSample(
       static_cast<int>(idle_time_in_ms));
 
+  if (deadline_in_ms - start_ms >
+      GCIdleTimeHandler::kMaxFrameRenderingIdleTime) {
+    int committed_memory = static_cast<int>(CommittedMemory() / KB);
+    int used_memory = static_cast<int>(heap_state.size_of_objects / KB);
+    isolate()->counters()->aggregated_memory_heap_committed()->AddSample(
+        start_ms, committed_memory);
+    isolate()->counters()->aggregated_memory_heap_used()->AddSample(
+        start_ms, used_memory);
+  }
+
   if (deadline_difference >= 0) {
     if (action.type != DONE && action.type != DO_NOTHING) {
       isolate()->counters()->gc_idle_time_limit_undershot()->AddSample(
           static_cast<int>(deadline_difference));
     }
   } else {
     isolate()->counters()->gc_idle_time_limit_overshot()->AddSample(
         static_cast<int>(-deadline_difference));
   }
 
@@ skipping 1972 matching lines @@
     *object_type = "CODE_TYPE";                                                \
     *object_sub_type = "CODE_AGE/" #name;                                      \
     return true;
     CODE_AGE_LIST_COMPLETE(COMPARE_AND_RETURN_NAME)
 #undef COMPARE_AND_RETURN_NAME
   }
   return false;
 }
 }  // namespace internal
 }  // namespace v8