Add BytesRead metric to CPM

chrome/browser/performance_monitor/metric_details.cc

 // Copyright (c) 2012 The Chromium 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 "chrome/browser/performance_monitor/metric_details.h"
 
 #include "base/logging.h"
 #include "chrome/browser/performance_monitor/constants.h"
 
 namespace performance_monitor {
@@ skipping 47 matching lines @@
 const char kMetricSessionRestoreTimeUnits[] = "microseconds";
 const double kMetricSessionRestoreTimeTickSize = 5000000;
 
 // Page Load Time
 const char kMetricPageLoadTimeName[] = "Page Load Time";
 const char kMetricPageLoadTimeDescription[] =
     "The amount of time taken to load a page measured in microseconds.";
 const char kMetricPageLoadTimeUnits[] = "microseconds";
 const double kMetricPageLoadTimeTickSize = 30000000.0;
 
+// Network Bytes Read
+const char kMetricNetworkBytesReadName[] = "Network Bytes Read";
+const char kMetricNetworkBytesReadDescription[] =
+    "The number of bytes read across the network.";
+const char kMetricNetworkBytesReadUnits[] = "bytes";
+const double kMetricNetworkBytesReadTickSize = 2000000.0;
+
 // Keep this array synced with MetricTypes in the header file.
 // TODO(mtytel): i18n.
 const MetricDetails kMetricDetailsList[] = {
   {
     kMetricCPUUsageName,
     kMetricCPUUsageDescription,
     kMetricCPUUsageUnits,
     kMetricCPUUsageTickSize,
   },
   {
@@ skipping 24 matching lines @@
     kMetricSessionRestoreTimeName,
     kMetricSessionRestoreTimeDescription,
     kMetricSessionRestoreTimeUnits,
     kMetricSessionRestoreTimeTickSize
   },
   {
     kMetricPageLoadTimeName,
     kMetricPageLoadTimeDescription,
     kMetricPageLoadTimeUnits,
     kMetricPageLoadTimeTickSize
+  },
+  {
+    kMetricNetworkBytesReadName,
+    kMetricNetworkBytesReadDescription,
+    kMetricNetworkBytesReadUnits,
+    kMetricNetworkBytesReadTickSize
   }
 };
 COMPILE_ASSERT(ARRAYSIZE_UNSAFE(kMetricDetailsList) == METRIC_NUMBER_OF_METRICS,
                metric_names_incorrect_size);
 
 }  // namespace
 
 const MetricDetails* GetMetricDetails(MetricType metric_type) {
   DCHECK_GT(METRIC_NUMBER_OF_METRICS, metric_type);
   return &kMetricDetailsList[metric_type];
 }
 
 }  // namespace performance_monitor