Name core/fxge/android files appropriately and use one file per class

core/fxge/android/fpf_skiafont.h

-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#ifndef CORE_FXGE_ANDROID_FPF_SKIAFONT_H_
-#define CORE_FXGE_ANDROID_FPF_SKIAFONT_H_
-
-#include "core/fxcrt/fx_system.h"
-#include "core/fxge/fx_font.h"
-
-class CFPF_SkiaFontDescriptor;
-class CFPF_SkiaFontMgr;
-
-class CFPF_SkiaFont {
- public:
-  CFPF_SkiaFont();
-  ~CFPF_SkiaFont();
-
-  void Release();
-  CFPF_SkiaFont* Retain();
-
-  CFX_ByteString GetFamilyName();
-  CFX_ByteString GetPsName();
-  uint32_t GetFontStyle() const { return m_dwStyle; }
-  uint8_t GetCharset() const { return m_uCharset; }
-  int32_t GetGlyphIndex(FX_WCHAR wUnicode);
-  int32_t GetGlyphWidth(int32_t iGlyphIndex);
-  int32_t GetAscent() const;
-  int32_t GetDescent() const;
-  FX_BOOL GetGlyphBBox(int32_t iGlyphIndex, FX_RECT& rtBBox);
-  FX_BOOL GetBBox(FX_RECT& rtBBox);
-  int32_t GetHeight() const;
-  int32_t GetItalicAngle() const;
-  uint32_t GetFontData(uint32_t dwTable, uint8_t* pBuffer, uint32_t dwSize);
-
-  FX_BOOL InitFont(CFPF_SkiaFontMgr* pFontMgr,
-                   CFPF_SkiaFontDescriptor* pFontDes,
-                   const CFX_ByteStringC& bsFamily,
-                   uint32_t dwStyle,
-                   uint8_t uCharset);
-
- private:
-  CFPF_SkiaFontMgr* m_pFontMgr;
-  CFPF_SkiaFontDescriptor* m_pFontDes;
-  FXFT_Face m_Face;
-  uint32_t m_dwStyle;
-  uint8_t m_uCharset;
-  uint32_t m_dwRefCount;
-};
-
-#endif  // CORE_FXGE_ANDROID_FPF_SKIAFONT_H_