Convert //sync from scoped_ptr to std::unique_ptr

sync/sessions/directory_type_debug_info_emitter.h

Index: sync/sessions/directory_type_debug_info_emitter.h
diff --git a/sync/sessions/directory_type_debug_info_emitter.h b/sync/sessions/directory_type_debug_info_emitter.h
index aa55e3b10e55f88c656063722e9e06258aae19d9..0bf8665ca19e589562d9798823fa4b055b237ccc 100644
--- a/sync/sessions/directory_type_debug_info_emitter.h
+++ b/sync/sessions/directory_type_debug_info_emitter.h
@@ -5,8 +5,9 @@
 #ifndef SYNC_SESSIONS_DIRECTORY_TYPE_DEBUG_INFO_EMITTER_H_
 #define SYNC_SESSIONS_DIRECTORY_TYPE_DEBUG_INFO_EMITTER_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/values.h"
 #include "sync/base/sync_export.h"
@@ -53,7 +54,7 @@ class SYNC_EXPORT DirectoryTypeDebugInfoEmitter {
   virtual ~DirectoryTypeDebugInfoEmitter();
 
   // Returns a ListValue representation of all known nodes of this type.
-  scoped_ptr<base::ListValue> GetAllNodes();
+  std::unique_ptr<base::ListValue> GetAllNodes();
 
   // Returns a reference to the current commit counters.
   const CommitCounters& GetCommitCounters() const;