Performance monitor stats gathering.

chrome/browser/performance_monitor/constants.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/constants.h"
 
 namespace performance_monitor {
 
-// The key to insert/retrieve information about the chrome version from the
-// database.
 const char kStateChromeVersion[] = "chrome_version";
 const char kMetricNotFoundError[] = "Mertic details not found.";
 const char kProcessChromeAggregate[] = "chrome_aggregate";
 
 const char kMetricCPUUsageName[] = "CPU Usage";
 const char kMetricCPUUsageDescription[] = "The CPU usage measured in percent.";
 const char kMetricCPUUsageUnits[] = "percent";
 const double kMetricCPUUsageTickSize = 100.0;
 
 const char kMetricPrivateMemoryUsageName[] = "Private Memory Usage";
 const char kMetricPrivateMemoryUsageDescription[] =
-    "The private memory usage measured in bytes.";
-const char kMetricPrivateMemoryUsageUnits[] = "percent";
+    "The total private memory usage of all chrome processes measured in bytes.";
+const char kMetricPrivateMemoryUsageUnits[] = "bytes";
 const double kMetricPrivateMemoryUsageTickSize = 10000000.0;
 
+const char kMetricSharedMemoryUsageName[] = "Shared Memory Usage";
+const char kMetricSharedMemoryUsageDescription[] =
+    "The total shared memory usage of all chrome processes measured in bytes.";
+const char kMetricSharedMemoryUsageUnits[] = "bytes";
+const double kMetricSharedMemoryUsageTickSize = 10000000.0;
 
 }  // namespace performance_monitor