Add toString to TextRange

Change-Id: I36cdc82b7b7905e038c59645a8ed60740a2598bf
diff --git a/src/main/java/com/android/tools/r8/position/TextRange.java b/src/main/java/com/android/tools/r8/position/TextRange.java
index d7c0f43..5f35aad 100644
--- a/src/main/java/com/android/tools/r8/position/TextRange.java
+++ b/src/main/java/com/android/tools/r8/position/TextRange.java
@@ -45,6 +45,11 @@
   }
 
   @Override
+  public String toString() {
+      return "Text range from: '" + getStart() + "', to: '" + getEnd() + "'";
+  }
+
+  @Override
   public String getDescription() {
     return start.getDescription();
   }