InlinedVisitor: Migrate css to use inlined tracing

Source/core/css/RemoteFontFaceSource.h

 // 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.
 
 #ifndef RemoteFontFaceSource_h
 #define RemoteFontFaceSource_h
 
 #include "core/css/CSSFontFaceSource.h"
 #include "core/fetch/FontResource.h"
 #include "core/fetch/ResourcePtr.h"
@@ skipping 16 matching lines @@
     virtual bool ensureFontData();
 
     virtual void didStartFontLoad(FontResource*) override;
     virtual void fontLoaded(FontResource*) override;
     virtual void fontLoadWaitLimitExceeded(FontResource*) override;
 
     // For UMA reporting
     virtual bool hadBlankText() override { return m_histograms.hadBlankText(); }
     void paintRequested() { m_histograms.fallbackFontPainted(); }
 
-    virtual void trace(Visitor*) override;
+    DECLARE_VIRTUAL_TRACE();
 
 protected:
     virtual PassRefPtr<SimpleFontData> createFontData(const FontDescription&) override;
     PassRefPtr<SimpleFontData> createLoadingFallbackFontData(const FontDescription&);
     void pruneTable();
 
 private:
     class FontLoadHistograms {
     public:
         FontLoadHistograms() : m_loadStartTime(0), m_fallbackPaintTime(0) { }
         void loadStarted();
         void fallbackFontPainted();
         void recordRemoteFont(const FontResource*);
         void recordFallbackTime(const FontResource*);
         bool hadBlankText() { return m_fallbackPaintTime; }
     private:
         const char* histogramName(const FontResource*);
         double m_loadStartTime;
         double m_fallbackPaintTime;
     };
 
     ResourcePtr<FontResource> m_font;
     RefPtrWillBeMember<FontLoader> m_fontLoader;
     FontLoadHistograms m_histograms;
 };
 
 } // namespace blink
 
 #endif