Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/first_run/first_run_controller.h

Index: chrome/browser/chromeos/first_run/first_run_controller.h
diff --git a/chrome/browser/chromeos/first_run/first_run_controller.h b/chrome/browser/chromeos/first_run/first_run_controller.h
index bd356ca56abf83c4db61a8141695121c4e232181..4bebd5af7501372efc7cc869d2e349a9dae761c8 100644
--- a/chrome/browser/chromeos/first_run/first_run_controller.h
+++ b/chrome/browser/chromeos/first_run/first_run_controller.h
@@ -7,6 +7,7 @@
 
 #include <stddef.h>
 
+#include <memory>
 #include <string>
 #include <vector>
 
@@ -15,7 +16,6 @@
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/linked_ptr.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "chrome/browser/ui/webui/chromeos/first_run/first_run_actor.h"
 
@@ -80,7 +80,7 @@ class FirstRunController : public FirstRunActor::Delegate,
   FirstRunActor* actor_;
 
   // Helper for manipulating and retreiving information from Shell.
-  scoped_ptr<ash::FirstRunHelper> shell_helper_;
+  std::unique_ptr<ash::FirstRunHelper> shell_helper_;
 
   // List of all tutorial steps.
   Steps steps_;