Created multi-process-friendly PowerMonitor interface.

components/nacl/loader/nacl_main.cc

Index: components/nacl/loader/nacl_main.cc
diff --git a/components/nacl/loader/nacl_main.cc b/components/nacl/loader/nacl_main.cc
index 9a3586f4729f737bc4f2e28cbadfe722bb9f5cf6..a9ec5c93c37a200f8b87d61fe7f79be1a65e7bad 100644
--- a/components/nacl/loader/nacl_main.cc
+++ b/components/nacl/loader/nacl_main.cc
@@ -7,6 +7,7 @@
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/power_monitor/power_monitor.h"
+#include "base/power_monitor/power_monitor_device_source.h"
 #include "base/timer/hi_res_timer_manager.h"
 #include "components/nacl/loader/nacl_listener.h"
 #include "components/nacl/loader/nacl_main_platform_delegate.h"
@@ -21,7 +22,9 @@ int NaClMain(const content::MainFunctionParams& parameters) {
   base::MessageLoopForIO main_message_loop;
   base::PlatformThread::SetName("CrNaClMain");
 
-  base::PowerMonitor power_monitor;
+  scoped_ptr<base::PowerMonitorSource> power_monitor_source(
+      new base::PowerMonitorDeviceSource());
+  base::PowerMonitor power_monitor(power_monitor_source.Pass());
   base::HighResolutionTimerManager hi_res_timer_manager;
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX)