Performance monitor stats gathering.

chrome/browser/performance_monitor/constants.cc

Index: chrome/browser/performance_monitor/constants.cc
diff --git a/chrome/browser/performance_monitor/constants.cc b/chrome/browser/performance_monitor/constants.cc
index 0b91160d11f8d88f9e27442d347e9edec53da832..27d660bf0ae02f2cb53e7cf4ffb0db9acca1a67c 100644
--- a/chrome/browser/performance_monitor/constants.cc
+++ b/chrome/browser/performance_monitor/constants.cc
@@ -42,8 +42,15 @@ const double kMetricCPUUsageTickSize = 100.0;
 // Private Memory Usage
 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;
 
+// Shared Memory Usage
+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