call onGetUPEM to subclasses can optimize it, and place default behavior

trunk/include/core/SkFontHost.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkFontHost_DEFINED
@@ skipping 73 matching lines @@
         kRGB_LCDOrder = 0,    //!< this is the default
         kBGR_LCDOrder = 1,
         kNONE_LCDOrder = 2
     };
 
     /** @deprecated set on Device creation. */
     static void SetSubpixelOrder(LCDOrder order);
     /** @deprecated get from Device. */
     static LCDOrder GetSubpixelOrder();
 
-#ifdef SK_BUILD_FOR_ANDROID
-    /**
-     * Return the number of font units per em.
-     *
-     * @param fontID the font to query.
-     * @return the number of font units per em or 0 on error.
-     */
-    static uint32_t GetUnitsPerEm(SkFontID fontID);
-#endif
-
     /** If Skia is running in a constrained environment and the typeface
      implementation is handle based, the typeface data may become
      unavailable asynchronously. If a font host or scaler context method is
      unable to access font data, it may call this function as a request to
      make the handle contained in the typeface useable.
      */
     static void EnsureTypefaceAccessible(const SkTypeface& typeface);
 
     /**
      *  DEPRECATED -- will be DESTROYED
@@ skipping 157 matching lines @@
      */
     static size_t GetTableData(SkFontID fontID, SkFontTableTag tag,
                                size_t offset, size_t length, void* data);
 
     ///////////////////////////////////////////////////////////////////////////
 
     friend class SkTypeface;
 };
 
 #endif