Add a system property to control Timing.MINIMUM_REPORT_PERCENTAGE

Change-Id: Ifca74b6682f1bc28f5546777512f7d7267cbef8f
diff --git a/src/main/java/com/android/tools/r8/utils/Timing.java b/src/main/java/com/android/tools/r8/utils/Timing.java
index 93524d1..92beeb7 100644
--- a/src/main/java/com/android/tools/r8/utils/Timing.java
+++ b/src/main/java/com/android/tools/r8/utils/Timing.java
@@ -23,7 +23,9 @@
 
 public class Timing {
 
-  private static final int MINIMUM_REPORT_PERCENTAGE = 2;
+  private static final int MINIMUM_REPORT_PERCENTAGE =
+      SystemPropertyUtils.parseSystemPropertyOrDefault(
+          "com.android.tools.r8.printtimes.minvalue", 2);
 
   private static final Timing EMPTY =
       new Timing("<empty>", false) {