Remove unused GcTracer functions.

src/heap/gc-tracer.cc

 // Copyright 2014 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/heap/gc-tracer.h"
 
 #include "src/counters.h"
 #include "src/heap/heap-inl.h"
 #include "src/isolate.h"
 
@@ skipping 679 matching lines @@
   EventBuffer::const_iterator iter = events.begin();
   while (iter != events.end()) {
     maximum = Max(iter->end_time - iter->start_time, maximum);
     ++iter;
   }
 
   return maximum;
 }
 
 
-double GCTracer::MeanIncrementalMarkingDuration() const {
-  if (cumulative_incremental_marking_steps_ == 0) return 0.0;
-
-  // We haven't completed an entire round of incremental marking, yet.
-  // Use data from GCTracer instead of data from event buffers.
-  if (incremental_mark_compactor_events_.empty()) {
-    return cumulative_incremental_marking_duration_ /
-           cumulative_incremental_marking_steps_;
-  }
-
-  int steps = 0;
-  double durations = 0.0;
-  EventBuffer::const_iterator iter = incremental_mark_compactor_events_.begin();
-  while (iter != incremental_mark_compactor_events_.end()) {
-    steps += iter->incremental_marking_steps;
-    durations += iter->incremental_marking_duration;
-    ++iter;
-  }
-
-  if (steps == 0) return 0.0;
-
-  return durations / steps;
-}
-
-
-double GCTracer::MaxIncrementalMarkingDuration() const {
-  // We haven't completed an entire round of incremental marking, yet.
-  // Use data from GCTracer instead of data from event buffers.
-  if (incremental_mark_compactor_events_.empty())
-    return longest_incremental_marking_step_;
-
-  double max_duration = 0.0;
-  EventBuffer::const_iterator iter = incremental_mark_compactor_events_.begin();
-  while (iter != incremental_mark_compactor_events_.end())
-    max_duration = Max(iter->longest_incremental_marking_step, max_duration);
-
-  return max_duration;
-}
-
-
 intptr_t GCTracer::IncrementalMarkingSpeedInBytesPerMillisecond() const {
   if (cumulative_incremental_marking_duration_ == 0.0) return 0;
 
   // We haven't completed an entire round of incremental marking, yet.
   // Use data from GCTracer instead of data from event buffers.
   if (incremental_mark_compactor_events_.empty()) {
     return static_cast<intptr_t>(cumulative_incremental_marking_bytes_ /
                                  cumulative_pure_incremental_marking_duration_);
   }
 
@@ skipping 192 matching lines @@
 
 
 bool GCTracer::SurvivalEventsRecorded() const {
   return survival_events_.size() > 0;
 }
 
 
 void GCTracer::ResetSurvivalEvents() { survival_events_.reset(); }
 }  // namespace internal
 }  // namespace v8