Adjust max number of samples that can be stored for a histogram (2000->300).

webrtc/system_wrappers/source/metrics_default.cc

 // Copyright (c) 2014 The WebRTC 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 in the root of the source
 // tree. An additional intellectual property rights grant can be found
 // in the file PATENTS.  All contributing project authors may
 // be found in the AUTHORS file in the root of the source tree.
 //
 
 #include "webrtc/system_wrappers/include/metrics_default.h"
 
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/system_wrappers/include/metrics.h"
 
 // Default implementation of histogram methods for WebRTC clients that do not
 // want to provide their own implementation.
 
 namespace webrtc {
 namespace metrics {
 class Histogram;
 
 namespace {
 // Limit for the maximum number of sample values that can be stored.
 // TODO(asapersson): Consider using bucket count (and set up
 // linearly/exponentially spaced buckets) if samples are logged more frequently.
-const int kMaxSampleMapSize = 2000;
+const int kMaxSampleMapSize = 300;
 
 class RtcHistogram {
  public:
   RtcHistogram(const std::string& name, int min, int max, int bucket_count)
       : min_(min), max_(max), info_(name, min, max, bucket_count) {
     RTC_DCHECK_GT(bucket_count, 0);
   }
 
   void Add(int sample) {
     if (sample < min_)
@@ skipping 247 matching lines @@
   return map ? map->NumSamples(name) : 0;
 }
 
 int MinSample(const std::string& name) {
   RtcHistogramMap* map = GetMap();
   return map ? map->MinSample(name) : -1;
 }
 
 }  // namespace metrics
 }  // namespace webrtc