Added purge method to SimpleFontData and PlatformFontData.

third_party/WebKit/Source/platform/fonts/FontPlatformData.h

 /*
  * Copyright (c) 2006, 2007, 2008, Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 118 matching lines @@
 #if OS(LINUX) || OS(ANDROID)
     // The returned styles are all actual styles without FontRenderStyle::NoPreference.
     const FontRenderStyle& getFontRenderStyle() const { return m_style; }
 #endif
     void setupPaint(SkPaint*, float deviceScaleFactor = 1, const Font* = 0) const;
 
 #if OS(WIN)
     int paintTextFlags() const { return m_paintTextFlags; }
 #endif
 
+    void purgeMemory();
+
 private:
 #if OS(WIN)
     void querySystemForRenderStyle();
 #endif
 
     RefPtr<SkTypeface> m_typeface;
 #if !OS(WIN)
     CString m_family;
 #endif
 
@@ skipping 12 matching lines @@
 #if OS(WIN)
     int m_paintTextFlags;
     unsigned m_minSizeForAntiAlias;
     float m_minSizeForSubpixel;
 #endif
 };
 
 } // namespace blink
 
 #endif // ifdef FontPlatformData_h