Convert //content/browser from scoped_ptr to std::unique_ptr

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 65d4d9dd7a5f56bbe75f2546719c57faf3af5198..1a79826de2c9f9a17c917a8beb98c16cb4d58249 100644
--- a/content/browser/power_usage_monitor_impl.cc
+++ b/content/browser/power_usage_monitor_impl.cc
@@ -249,7 +249,7 @@ void PowerUsageMonitor::OnRenderProcessNotification(int type, int rph_id) {
 }
 
 void PowerUsageMonitor::SetSystemInterfaceForTest(
-    scoped_ptr<SystemInterface> interface) {
+    std::unique_ptr<SystemInterface> interface) {
   system_interface_ = std::move(interface);
 }