Create PowerMonitor while starting aura_demo and views_examples_exe

ui/views/examples/examples_main.cc

Index: ui/views/examples/examples_main.cc
diff --git a/ui/views/examples/examples_main.cc b/ui/views/examples/examples_main.cc
index a2f87391c29d968f763bafbcb41ccaa6cba39c82..1802d0efee55621993dd6e606ce9298d9d4ef8aa 100644
--- a/ui/views/examples/examples_main.cc
+++ b/ui/views/examples/examples_main.cc
@@ -8,6 +8,8 @@
 #include "base/i18n/icu_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
+#include "base/power_monitor/power_monitor.h"
+#include "base/power_monitor/power_monitor_device_source.h"
 #include "base/run_loop.h"
 #include "ui/base/ime/input_method_initializer.h"
 #include "ui/base/resource/resource_bundle.h"
@@ -70,6 +72,9 @@ int main(int argc, char** argv) {
   DCHECK(PathService::Get(ui::UI_TEST_PAK, &ui_test_pak_path));
   ui::ResourceBundle::InitSharedInstanceWithPakPath(ui_test_pak_path);
 
+  base::PowerMonitor power_monitor(make_scoped_ptr(
+      new base::PowerMonitorDeviceSource));
+
 #if defined(OS_WIN)
     gfx::win::MaybeInitializeDirectWrite();
 #endif