Add stats for average QP per frame for VP8 (for received video streams).

webrtc/system_wrappers/interface/metrics.h

 //
 // 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.
 //
 
@@ skipping 54 matching lines @@
 // and temporary solution. Note that the histogram is constructed/found for
 // each call. Therefore, for now only use this implementation for metrics
 // that do not need to be updated frequently.
 // TODO(asapersson): Change implementation when atomics are supported.
 // Also consider changing string to const char* when switching to atomics.
 
 // Histogram for counters.
 #define RTC_HISTOGRAM_COUNTS_100(name, sample) RTC_HISTOGRAM_COUNTS( \
     name, sample, 1, 100, 50)
 
+#define RTC_HISTOGRAM_COUNTS_200(name, sample) RTC_HISTOGRAM_COUNTS( \
+    name, sample, 1, 200, 50)
+
 #define RTC_HISTOGRAM_COUNTS_1000(name, sample) RTC_HISTOGRAM_COUNTS( \
     name, sample, 1, 1000, 50)
 
 #define RTC_HISTOGRAM_COUNTS_10000(name, sample) RTC_HISTOGRAM_COUNTS( \
     name, sample, 1, 10000, 50)
 
 #define RTC_HISTOGRAM_COUNTS_100000(name, sample) RTC_HISTOGRAM_COUNTS( \
     name, sample, 1, 100000, 50)
 
 #define RTC_HISTOGRAM_COUNTS(name, sample, min, max, bucket_count) \
@@ skipping 42 matching lines @@
 // Function for adding a |sample| to a histogram.
 // |name| can be used to verify that it matches the histogram name.
 void HistogramAdd(
     Histogram* histogram_pointer, const std::string& name, int sample);
 
 }  // namespace metrics
 }  // namespace webrtc
 
 #endif  // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_METRICS_H_