Rename StyleSheetCollections to StyleEngine.

Source/core/css/SelectorChecker.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 136 matching lines @@
                 return SelectorFailsLocally;
         } else if (context.selector->isContentPseudoElement()) {
             if (!context.element->isInShadowTree() || !context.element->isInsertionPoint())
                 return SelectorFailsLocally;
         } else {
             if ((!context.elementStyle && m_mode == ResolvingStyle) || m_mode == QueryingRules)
                 return SelectorFailsLocally;
 
             PseudoId pseudoId = CSSSelector::pseudoId(context.selector->pseudoType());
             if (pseudoId == FIRST_LETTER)
-                context.element->document().styleSheetCollections()->setUsesFirstLetterRules(true);
+                context.element->document().styleEngine()->setUsesFirstLetterRules(true);
             if (pseudoId != NOPSEUDO && m_mode != SharingRules)
                 dynamicPseudo = pseudoId;
         }
     }
 
     // The rest of the selectors has to match
     CSSSelector::Relation relation = context.selector->relation();
 
     // Prepare next selector
     const CSSSelector* historySelector = context.selector->tagHistory();
@@ skipping 291 matching lines @@
                         if (!textNode->data().isEmpty()) {
                             result = false;
                             break;
                         }
                     }
                 }
                 if (m_mode == ResolvingStyle) {
                     element->setStyleAffectedByEmpty();
                     if (context.elementStyle)
                         context.elementStyle->setEmptyState(result);
-                    else if (element->renderStyle() && (element->document().styleSheetCollections()->usesSiblingRules() || element->renderStyle()->unique()))
+                    else if (element->renderStyle() && (element->document().styleEngine()->usesSiblingRules() || element->renderStyle()->unique()))
                         element->renderStyle()->setEmptyState(result);
                 }
                 return result;
             }
         case CSSSelector::PseudoFirstChild:
             // first-child matches the first child that is an element
             if (Element* parent = element->parentElement()) {
                 bool result = siblingTraversalStrategy.isFirstChild(element);
                 if (m_mode == ResolvingStyle) {
                     RenderStyle* childStyle = context.elementStyle ? context.elementStyle : element->renderStyle();
@@ skipping 512 matching lines @@
     return element->focused() && isFrameFocused(element);
 }
 
 template
 SelectorChecker::Match SelectorChecker::match(const SelectorCheckingContext&, PseudoId&, const DOMSiblingTraversalStrategy&) const;
 
 template
 SelectorChecker::Match SelectorChecker::match(const SelectorCheckingContext&, PseudoId&, const ShadowDOMSiblingTraversalStrategy&) const;
 
 }