Revert of Move the FontFaceCache stored in CSSFontSelector to be stored in Document.

third_party/WebKit/Source/core/css/CSSFontSelector.h

 /*
  * Copyright (C) 2007, 2008, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef CSSFontSelector_h
 #define CSSFontSelector_h
 
 #include "core/CoreExport.h"
 #include "core/css/FontFaceCache.h"
-#include "core/dom/Document.h"
 #include "platform/fonts/FontSelector.h"
 #include "platform/fonts/GenericFontFamilySettings.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 
 namespace blink {
 
 class CSSFontSelectorClient;
+class Document;
 class FontDescription;
 
 class CORE_EXPORT CSSFontSelector : public FontSelector {
  public:
   static CSSFontSelector* create(Document* document) {
     return new CSSFontSelector(document);
   }
   ~CSSFontSelector() override;
 
-  unsigned version() const override {
-    return m_document->fontFaceCache()->version();
-  }
+  unsigned version() const override { return m_fontFaceCache.version(); }
 
   PassRefPtr<FontData> getFontData(const FontDescription&,
                                    const AtomicString&) override;
   void willUseFontData(const FontDescription&,
                        const AtomicString& family,
                        const String& text) override;
   void willUseRange(const FontDescription&,
                     const AtomicString& familyName,
                     const FontDataForRangeSet&) override;
   bool isPlatformFontAvailable(const FontDescription&,
                                const AtomicString& family);
 
   void fontFaceInvalidated();
 
   // FontCacheClient implementation
   void fontCacheInvalidated() override;
 
   void registerForInvalidationCallbacks(CSSFontSelectorClient*);
   void unregisterForInvalidationCallbacks(CSSFontSelectorClient*);
 
   Document* document() const { return m_document; }
+  FontFaceCache* fontFaceCache() { return &m_fontFaceCache; }
 
   const GenericFontFamilySettings& genericFontFamilySettings() const {
     return m_genericFontFamilySettings;
   }
   void updateGenericFontFamilySettings(Document&);
 
   DECLARE_VIRTUAL_TRACE();
 
  protected:
   explicit CSSFontSelector(Document*);
 
   void dispatchInvalidationCallbacks();
 
  private:
-  CSSSegmentedFontFace* getFontFaceFromCache(
-      const FontDescription& fontDescription,
-      const AtomicString& family) {
-    return m_document->fontFaceCache()->get(fontDescription, family);
-  }
-
   // TODO(Oilpan): Ideally this should just be a traced Member but that will
   // currently leak because ComputedStyle and its data are not on the heap.
   // See crbug.com/383860 for details.
   WeakMember<Document> m_document;
+  // FIXME: Move to Document or StyleEngine.
+  FontFaceCache m_fontFaceCache;
   HeapHashSet<WeakMember<CSSFontSelectorClient>> m_clients;
   GenericFontFamilySettings m_genericFontFamilySettings;
 };
 
 }  // namespace blink
 
 #endif  // CSSFontSelector_h