Convert //sync from scoped_ptr to std::unique_ptr

sync/test/fake_server/fake_server.h

Index: sync/test/fake_server/fake_server.h
diff --git a/sync/test/fake_server/fake_server.h b/sync/test/fake_server/fake_server.h
index 0f6e321ebb3228e4a001f7310b2f6276fab344c0..03b3c324c006bcb21c71573b9c663b7a5145026a 100644
--- a/sync/test/fake_server/fake_server.h
+++ b/sync/test/fake_server/fake_server.h
@@ -8,11 +8,11 @@
 #include <stdint.h>
 
 #include <map>
+#include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/threading/thread_checker.h"
 #include "base/values.h"
@@ -61,7 +61,7 @@ class FakeServer {
   // server. The dictionary keys are the strings generated by ModelTypeToString
   // and the values are ListValues containing StringValue versions of entity
   // names.
-  scoped_ptr<base::DictionaryValue> GetEntitiesAsDictionaryValue();
+  std::unique_ptr<base::DictionaryValue> GetEntitiesAsDictionaryValue();
 
   // Returns all entities stored by the server of the given |model_type|.
   // This method returns SyncEntity protocol buffer objects (instead of
@@ -73,7 +73,7 @@ class FakeServer {
   // Adds |entity| to the server's collection of entities. This method makes no
   // guarantees that the added entity will result in successful server
   // operations.
-  void InjectEntity(scoped_ptr<FakeServerEntity> entity);
+  void InjectEntity(std::unique_ptr<FakeServerEntity> entity);
 
   // Modifies the entity on the server with the given |id|. The entity's
   // EntitySpecifics are replaced with |updated_specifics| and its version is
@@ -149,7 +149,7 @@ class FakeServer {
   base::WeakPtr<FakeServer> AsWeakPtr();
 
  private:
-  using EntityMap = std::map<std::string, scoped_ptr<FakeServerEntity>>;
+  using EntityMap = std::map<std::string, std::unique_ptr<FakeServerEntity>>;
 
   // Gets FakeServer ready for syncing.
   void Init();
@@ -171,7 +171,7 @@ class FakeServer {
   bool CreateDefaultPermanentItems();
 
   // Saves a |entity| to |entities_|.
-  void SaveEntity(scoped_ptr<FakeServerEntity> entity);
+  void SaveEntity(std::unique_ptr<FakeServerEntity> entity);
 
   // Commits a client-side SyncEntity to the server as a FakeServerEntity.
   // The client that sent the commit is identified via |client_guid|. The
@@ -233,7 +233,8 @@ class FakeServer {
 
   // Used as the error field of ClientToServerResponse when its pointer is not
   // NULL.
-  scoped_ptr<sync_pb::ClientToServerResponse_Error> triggered_actionable_error_;
+  std::unique_ptr<sync_pb::ClientToServerResponse_Error>
+      triggered_actionable_error_;
 
   // These values are used in tandem to return a triggered error (either
   // |error_type_| or |triggered_actionable_error_|) on every other request.