Oilpan: fix build after r201865.

Source/core/editing/VisibleUnitsTest.cpp

 // Copyright 2015 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 "config.h"
 #include "core/editing/VisibleUnits.h"
 
 #include "core/editing/EditingTestBase.h"
 #include "core/editing/VisiblePosition.h"
 
@@ skipping 25 matching lines @@
 
 class VisibleUnitsTest : public EditingTestBase {
 };
 
 TEST_F(VisibleUnitsTest, absoluteCaretBoundsOf)
 {
     const char* bodyContent = "<p id='host'><b id='one'>11</b><b id='two'>22</b></p>";
     const char* shadowContent = "<div><content select=#two></content><content select=#one></content></div>";
     setBodyContent(bodyContent);
     RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent, "host");
+    ASSERT_UNUSED(shadowRoot, shadowRoot);
     updateLayoutAndStyleForPainting();
 
     RefPtrWillBeRawPtr<Element> body = document().body();
     RefPtrWillBeRawPtr<Element> one = body->querySelector("#one", ASSERT_NO_EXCEPTION);
 
     IntRect boundsInDOMTree = absoluteCaretBoundsOf(createVisiblePosition(Position(one.get(), 0)));
     IntRect boundsInComposedTree = absoluteCaretBoundsOf(createVisiblePosition(PositionInComposedTree(one.get(), 0)));
 
     EXPECT_FALSE(boundsInDOMTree.isEmpty());
     EXPECT_EQ(boundsInDOMTree, boundsInComposedTree);
@@ skipping 103 matching lines @@
     setBodyContent(bodyContent);
     updateLayoutAndStyleForPainting();
     RefPtrWillBeRawPtr<Element> sample1 = document().getElementById("sample1");
     RefPtrWillBeRawPtr<Element> sample2 = document().getElementById("sample2");
 
     EXPECT_FALSE(rendersInDifferentPosition(Position::afterNode(sample1->firstChild()), Position(sample2->firstChild(), 0)));
     EXPECT_FALSE(rendersInDifferentPosition(Position::lastPositionInNode(sample1->firstChild()), Position(sample2->firstChild(), 0)));
 }
 
 } // namespace blink