[interpreter] statement position always overwrites earlier positions.

test/unittests/interpreter/source-position-table-unittest.cc

Index: test/unittests/interpreter/source-position-table-unittest.cc
diff --git a/test/unittests/interpreter/source-position-table-unittest.cc b/test/unittests/interpreter/source-position-table-unittest.cc
index af70179ef454824d7aa2ed96edc759e56b1a2312..d62302a2cd653cd6928a5346251211cf2ace1ae0 100644
--- a/test/unittests/interpreter/source-position-table-unittest.cc
+++ b/test/unittests/interpreter/source-position-table-unittest.cc
@@ -37,15 +37,7 @@ TEST_F(SourcePositionTableTest, EncodeStatementDuplicates) {
   SourcePositionTableBuilder builder(isolate(), zone());
   for (int i = 0; i < arraysize(offsets); i++) {
     builder.AddStatementPosition(offsets[i], offsets[i]);
-    builder.AddStatementPosition(
-        offsets[i], offsets[i],
-        (i % 2 == 0) ? SourcePositionTableBuilder::OVERWRITE_DUPLICATE
-                     : SourcePositionTableBuilder::DISCARD_DUPLICATE);
-    builder.AddStatementPosition(offsets[i], offsets[i]);
-    builder.AddStatementPosition(
-        offsets[i], offsets[i],
-        (i % 2 == 0) ? SourcePositionTableBuilder::OVERWRITE_DUPLICATE
-                     : SourcePositionTableBuilder::DISCARD_DUPLICATE);
+    builder.AddStatementPosition(offsets[i], offsets[i] + 1);
   }
 
   // To test correctness, we rely on the assertions in ToSourcePositionTable().