[lvcs]: provide lvcs API to be able revert dir to label-state

platform/lvcs-api/src/com/intellij/history/LocalHistory.java

@@ -43,4 +43,8 @@ public abstract class LocalHistory {
   public abstract byte[] getByteContent(VirtualFile f, FileRevisionTimestampComparator c);
 
   public abstract boolean isUnderControl(VirtualFile f);
+
+  public void revertToLabel(@NotNull Project project, @NotNull VirtualFile f, @NotNull Label label) {
+  }
+
 }

platform/lvcs-impl/src/com/intellij/history/integration/LocalHistoryImpl.java

@@ -234,4 +234,8 @@ public class LocalHistoryImpl extends LocalHistory implements ApplicationCompone
   public IdeaGateway getGateway() {
     return myGateway;
   }
+
+  @Override
+  public void revertToLabel(@NotNull Project project, @NotNull VirtualFile f, @NotNull Label label) {
+  }
 }