Get rid of redundant parameter PositionIsOffsetInAnchor from PositionAlgorithm constructor

Source/core/editing/iterators/TextIteratorTest.cpp

 /*
  * Copyright (c) 2013, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 48 matching lines @@
 private:
     template <typename Tree>
     std::string iterateWithIterator(typename Tree::TextIteratorType&);
 };
 
 template <typename Tree>
 std::string TextIteratorTest::iterate(TextIteratorBehavior iteratorBehavior)
 {
     RefPtrWillBeRawPtr<Element> body = document().body();
     using PositionType = typename Tree::PositionType;
-    auto start = PositionType(body, 0, PositionType::PositionIsOffsetInAnchor);
-    auto end = PositionType(body, Tree::countChildren(*body), PositionType::PositionIsOffsetInAnchor);
+    auto start = PositionType(body, 0);
+    auto end = PositionType(body, Tree::countChildren(*body));
     typename Tree::TextIteratorType iterator(start, end, iteratorBehavior);
     return iterateWithIterator<Tree>(iterator);
 }
 
 template <typename Tree>
 std::string TextIteratorTest::iteratePartial(const typename Tree::PositionType& start, const typename Tree::PositionType& end, TextIteratorBehavior iteratorBehavior)
 {
     typename Tree::TextIteratorType iterator(start, end, iteratorBehavior);
     return iterateWithIterator<Tree>(iterator);
 }
@@ skipping 349 matching lines @@
 
     Node* divNode = document().getElementById("div");
     RefPtrWillBeRawPtr<Range> entireRange = Range::create(document(), divNode, 0, divNode, 3);
 
     RefPtrWillBeRawPtr<Range> subrange = TextIterator::subrange(entireRange.get(), 2, 3);
     EXPECT_EQ(0, subrange->startOffset());
     EXPECT_EQ(3, subrange->endOffset());
 }
 
 } // namespace blink