Provide user friendly messages for OTS parsing of fonts

Source/core/css/BinaryDataFontFaceSource.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 BinaryDataFontFaceSource_h
 #define BinaryDataFontFaceSource_h
 
 #include "core/css/CSSFontFaceSource.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class FontCustomPlatformData;
 class SharedBuffer;
 
 class BinaryDataFontFaceSource final : public CSSFontFaceSource {
 public:
-    explicit BinaryDataFontFaceSource(SharedBuffer*);
+    explicit BinaryDataFontFaceSource(SharedBuffer*, String&);
     virtual ~BinaryDataFontFaceSource();
     virtual bool isValid() const override;
 
 private:
     virtual PassRefPtr<SimpleFontData> createFontData(const FontDescription&) override;
 
     OwnPtr<FontCustomPlatformData> m_customPlatformData;
 };
 
 } // namespace blink
 
 #endif