Convert //chrome/installer from scoped_ptr to std::unique_ptr

chrome/installer/util/master_preferences.h

Index: chrome/installer/util/master_preferences.h
diff --git a/chrome/installer/util/master_preferences.h b/chrome/installer/util/master_preferences.h
index afaf31924821adb886bda41016ee799a642215c8..424c4dfdec6d2bfedc0ec8a8212b0382c71e3f06 100644
--- a/chrome/installer/util/master_preferences.h
+++ b/chrome/installer/util/master_preferences.h
@@ -8,12 +8,12 @@
 #ifndef CHROME_INSTALLER_UTIL_MASTER_PREFERENCES_H_
 #define CHROME_INSTALLER_UTIL_MASTER_PREFERENCES_H_
 
+#include <memory>
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "build/build_config.h"
 
 namespace base {
@@ -208,7 +208,7 @@ class MasterPreferences {
   // copied over to profile preferences.
   std::string ExtractPrefString(const std::string& name) const;
 
-  scoped_ptr<base::DictionaryValue> master_dictionary_;
+  std::unique_ptr<base::DictionaryValue> master_dictionary_;
   base::DictionaryValue* distribution_;
   bool preferences_read_from_file_;
   bool chrome_;