Convert Pass()→std::move() in //content/browser

content/browser/power_usage_monitor_impl.cc

Index: content/browser/power_usage_monitor_impl.cc
diff --git a/content/browser/power_usage_monitor_impl.cc b/content/browser/power_usage_monitor_impl.cc
index 92d835a18e3aa8218c72ea94ffe88d2af19bcdc8..65d4d9dd7a5f56bbe75f2546719c57faf3af5198 100644
--- a/content/browser/power_usage_monitor_impl.cc
+++ b/content/browser/power_usage_monitor_impl.cc
@@ -5,6 +5,7 @@
 #include "content/browser/power_usage_monitor_impl.h"
 
 #include <stddef.h>
+#include <utility>
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
@@ -249,7 +250,7 @@ void PowerUsageMonitor::OnRenderProcessNotification(int type, int rph_id) {
 
 void PowerUsageMonitor::SetSystemInterfaceForTest(
     scoped_ptr<SystemInterface> interface) {
-  system_interface_ = interface.Pass();
+  system_interface_ = std::move(interface);
 }
 
 void PowerUsageMonitor::OnPowerStateChange(bool on_battery_power) {