Battery impact UMA

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index b509e20670fb4fb623f76565cb0a90dbb08056be..9e60ab4ba04645c95dbe2de4b49dfe6fcc56d3d0 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -116,6 +116,7 @@
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
+#include "content/public/browser/power_usage_monitor.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
@@ -1553,6 +1554,11 @@ int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
   browser_creator_.reset();
 #endif  // !defined(OS_ANDROID)
 
+#if !defined(OS_LINUX)  // http://crbug.com/426393

[Daniel Erat, 2014/10/23 19:05:34]

i think that this incorrectly excludes chrome os, which does support
base::PowerMonitor now. this should probably instead be:

  #if !defined(OS_LINUX) || defined(OS_CHROMEOS)

[jeremy, 2014/10/27 08:25:11]

Done.

+  if (g_browser_process->metrics_service()->reporting_active())
+    content::StartPowerUsageMonitor();
+#endif  // !defined(OS_LINUX)
+
 #if !defined(OS_ANDROID)
   process_power_collector_.reset(new ProcessPowerCollector);
   process_power_collector_->Initialize();