Return reference from styleEngine() accessor.

Source/core/css/AffectedByFocusTest.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/HTMLNames.h"
 #include "core/dom/Element.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/NodeLayoutStyle.h"
 #include "core/dom/StyleEngine.h"
@@ skipping 192 matching lines @@
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "</div>");
 
     document().view()->updateLayoutAndStyleIfNeededRecursive();
 
-    unsigned startCount = document().styleEngine()->resolverAccessCount();
+    unsigned startCount = document().styleEngine().resolverAccessCount();
 
     document().getElementById("d")->focus();
     document().view()->updateLayoutAndStyleIfNeededRecursive();
 
-    unsigned accessCount = document().styleEngine()->resolverAccessCount() - startCount;
+    unsigned accessCount = document().styleEngine().resolverAccessCount() - startCount;
 
     ASSERT_EQ(1U, accessCount);
 }
 
 TEST_F(AffectedByFocusTest, ChildrenOrSiblingsAffectedByFocusUpdate)
 {
     // Check that when focussing the outer div in the document below, you get a
     // style recalc for the whole subtree.
 
     setHtmlInnerHTML("<style>:focus div { border: 1px solid lime; }</style>"
         "<div id=d tabIndex=1>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "</div>");
 
     document().view()->updateLayoutAndStyleIfNeededRecursive();
 
-    unsigned startCount = document().styleEngine()->resolverAccessCount();
+    unsigned startCount = document().styleEngine().resolverAccessCount();
 
     document().getElementById("d")->focus();
     document().view()->updateLayoutAndStyleIfNeededRecursive();
 
-    unsigned accessCount = document().styleEngine()->resolverAccessCount() - startCount;
+    unsigned accessCount = document().styleEngine().resolverAccessCount() - startCount;
 
     ASSERT_EQ(11U, accessCount);
 }
 
 TEST_F(AffectedByFocusTest, InvalidationSetFocusUpdate)
 {
     // Check that when focussing the outer div in the document below, you get a
     // style recalc for the outer div and the class=a div only.
 
     setHtmlInnerHTML("<style>:focus .a { border: 1px solid lime; }</style>"
         "<div id=d tabIndex=1>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div class='a'></div>"
         "</div>");
 
     document().view()->updateLayoutAndStyleIfNeededRecursive();
 
-    unsigned startCount = document().styleEngine()->resolverAccessCount();
+    unsigned startCount = document().styleEngine().resolverAccessCount();
 
     document().getElementById("d")->focus();
     document().view()->updateLayoutAndStyleIfNeededRecursive();
 
-    unsigned accessCount = document().styleEngine()->resolverAccessCount() - startCount;
+    unsigned accessCount = document().styleEngine().resolverAccessCount() - startCount;
 
     ASSERT_EQ(2U, accessCount);
 }
 
 TEST_F(AffectedByFocusTest, NoInvalidationSetFocusUpdate)
 {
     // Check that when focussing the outer div in the document below, you get a
     // style recalc for the outer div only. The invalidation set for :focus will
     // include 'a', but the id=d div should be affectedByFocus, not childrenOrSiblingsAffectedByFocus.
 
     setHtmlInnerHTML("<style>#nomatch:focus .a { border: 1px solid lime; }</style>"
         "<div id=d tabIndex=1>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div></div>"
         "<div class='a'></div>"
         "</div>");
 
     document().view()->updateLayoutAndStyleIfNeededRecursive();
 
-    unsigned startCount = document().styleEngine()->resolverAccessCount();
+    unsigned startCount = document().styleEngine().resolverAccessCount();
 
     document().getElementById("d")->focus();
     document().view()->updateLayoutAndStyleIfNeededRecursive();
 
-    unsigned accessCount = document().styleEngine()->resolverAccessCount() - startCount;
+    unsigned accessCount = document().styleEngine().resolverAccessCount() - startCount;
 
     ASSERT_EQ(1U, accessCount);
 }
 
 } // namespace