Internal change

PiperOrigin-RevId: 157878648
diff --git a/src/main/java/com/google/devtools/common/options/Converters.java b/src/main/java/com/google/devtools/common/options/Converters.java
index 0d19029..4584f80 100644
--- a/src/main/java/com/google/devtools/common/options/Converters.java
+++ b/src/main/java/com/google/devtools/common/options/Converters.java
@@ -459,4 +459,13 @@
     }
   }
 
+  /**
+   * A converter to check whether an integer denoting a percentage is in a valid range: [0, 100].
+   */
+  public static class PercentageConverter extends RangeConverter {
+    public PercentageConverter() {
+      super(0, 100);
+    }
+  }
+
 }