Return reference from styleEngine() accessor.

Source/core/css/resolver/FontBuilderTest.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 "config.h"
 #include "core/css/resolver/FontBuilder.h"
 
 #include "core/css/CSSFontSelector.h"
 #include "core/dom/Document.h"
 #include "core/dom/StyleEngine.h"
@@ skipping 37 matching lines @@
 
 class FontBuilderInitTest : public FontBuilderTest, public ::testing::Test { };
 class FontBuilderAdditiveTest : public FontBuilderTest, public ::testing::TestWithParam<FunctionPair> { };
 
 TEST_F(FontBuilderInitTest, InitialFontSizeNotScaled)
 {
     RefPtr<LayoutStyle> initial = LayoutStyle::create();
 
     FontBuilder builder(document());
     builder.setInitial(1.0f); // FIXME: Remove unused param.
-    builder.createFont(document().styleEngine()->fontSelector(), *initial);
+    builder.createFont(document().styleEngine().fontSelector(), *initial);
 
     EXPECT_EQ(16.0f, initial->fontDescription().computedSize());
 }
 
 TEST_F(FontBuilderInitTest, NotDirty)
 {
     FontBuilder builder(document());
     ASSERT_FALSE(builder.fontDirty());
 }
 
 // This test verifies that when you are setting some field F via FontBuilder,
 // only F is actually modified on the incoming LayoutStyle::fontDescription.
 TEST_P(FontBuilderAdditiveTest, OnlySetValueIsModified)
 {
     FunctionPair funcs = GetParam();
 
     FontDescription parentDescription;
     funcs.setBaseValue(parentDescription);
 
     RefPtr<LayoutStyle> style = LayoutStyle::create();
     style->setFontDescription(parentDescription);
 
     FontBuilder fontBuilder(document());
     funcs.setValue(fontBuilder);
-    fontBuilder.createFont(document().styleEngine()->fontSelector(), *style);
+    fontBuilder.createFont(document().styleEngine().fontSelector(), *style);
 
     FontDescription outputDescription = style->fontDescription();
 
     // FontBuilder should have overwritten our base value set in the parent,
     // hence the descriptions should not be equal.
     ASSERT_NE(parentDescription, outputDescription);
 
     // Overwrite the value set by FontBuilder with the base value, directly
     // on outputDescription.
     funcs.setBaseValue(outputDescription);
@@ skipping 63 matching lines @@
     FunctionPair(fontStyleBase, fontStyleValue),
     FunctionPair(fontVariantBase, fontVariantValue),
     FunctionPair(fontVariantLigaturesBase, fontVariantLigaturesValue),
     FunctionPair(fontTextRenderingBase, fontTextRenderingValue),
     FunctionPair(fontKerningBase, fontKerningValue),
     FunctionPair(fontFontSmoothingBase, fontFontSmoothingValue),
     FunctionPair(fontSizeBase, fontSizeValue),
     FunctionPair(fontScriptBase, fontScriptValue)));
 
 } // namespace blink