Convert //sync from scoped_ptr to std::unique_ptr

sync/sessions/data_type_tracker.h

Index: sync/sessions/data_type_tracker.h
diff --git a/sync/sessions/data_type_tracker.h b/sync/sessions/data_type_tracker.h
index 80fb164027f38819d2b4d66d41a819cbc26d8f7a..e2bf27cbb782324234b71d120bec7f6b0caf6f03 100644
--- a/sync/sessions/data_type_tracker.h
+++ b/sync/sessions/data_type_tracker.h
@@ -7,10 +7,10 @@
 
 #include <stddef.h>
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/time/time.h"
 #include "sync/internal_api/public/base/invalidation_interface.h"
@@ -40,7 +40,8 @@ class DataTypeTracker {
   void RecordLocalRefreshRequest();
 
   // Tracks that we received invalidation notifications for this type.
-  void RecordRemoteInvalidation(scoped_ptr<InvalidationInterface> incoming);
+  void RecordRemoteInvalidation(
+      std::unique_ptr<InvalidationInterface> incoming);
 
   // Takes note that initial sync is pending for this type.
   void RecordInitialSyncRequired();
@@ -139,7 +140,7 @@ class DataTypeTracker {
   base::TimeTicks unthrottle_time_;
 
   // A helper to keep track invalidations we dropped due to overflow.
-  scoped_ptr<InvalidationInterface> last_dropped_invalidation_;
+  std::unique_ptr<InvalidationInterface> last_dropped_invalidation_;
 
   // The amount of time to delay a sync cycle by when a local change for this
   // type occurs.