Get rid of unused functions SelectionAdjuster::adjustSelectionIn{DOM,Flat}Tree

third_party/WebKit/Source/core/editing/VisibleSelectionTest.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/editing/VisibleSelection.h"
 
 #include "core/dom/Range.h"
 #include "core/editing/EditingTestBase.h"
 #include "core/editing/SelectionAdjuster.h"
 
@@ skipping 463 matching lines @@
   EXPECT_EQ(Position(sample->firstChild(), 0), selection.start());
 
   // Simulates modifying DOM tree to invalidate distribution.
   Element* host = document().getElementById("host");
   host->appendChild(sample);
   document().updateStyleAndLayout();
 
   // Simulates to restore selection from undo stack.
   selection.updateIfNeeded();
   EXPECT_EQ(Position(sample->firstChild(), 0), selection.start());
-
-  VisibleSelectionInFlatTree selectionInFlatTree;
-  SelectionAdjuster::adjustSelectionInFlatTree(&selectionInFlatTree, selection);
-  EXPECT_EQ(PositionInFlatTree(sample->firstChild(), 0),
-            selectionInFlatTree.start());
 }
 
 }  // namespace blink