Remove support for loading remote font faces

sky/engine/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 SKY_ENGINE_CORE_CSS_REMOTEFONTFACESOURCE_H_
-#define SKY_ENGINE_CORE_CSS_REMOTEFONTFACESOURCE_H_
-
-#include "sky/engine/core/css/CSSFontFaceSource.h"
-#include "sky/engine/core/fetch/FontResource.h"
-#include "sky/engine/core/fetch/ResourcePtr.h"
-
-namespace blink {
-
-class FontLoader;
-
-class RemoteFontFaceSource : public CSSFontFaceSource, public FontResourceClient {
-public:
-    explicit RemoteFontFaceSource(FontResource*, PassRefPtr<FontLoader>);
-    virtual ~RemoteFontFaceSource();
-
-    virtual FontResource* resource() override { return m_font.get(); }
-    virtual bool isLoading() const override;
-    virtual bool isLoaded() const override;
-    virtual bool isValid() const override;
-
-    void beginLoadIfNeeded() override;
-    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(); }
-
-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;
-    RefPtr<FontLoader> m_fontLoader;
-    FontLoadHistograms m_histograms;
-};
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_CORE_CSS_REMOTEFONTFACESOURCE_H_