Revert of SkScaledCodec class

include/codec/SkCodec.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCodec_DEFINED
 #define SkCodec_DEFINED
 
@@ skipping 33 matching lines @@
 
     /**
      *  Return the ImageInfo associated with this codec.
      */
     const SkImageInfo& getInfo() const { return fInfo; }
 
     /**
      *  Return a size that approximately supports the desired scale factor.
      *  The codec may not be able to scale efficiently to the exact scale
      *  factor requested, so return a size that approximates that scale.
-     *  The returned value is the codec's suggestion for the closest valid
-     *  scale that it can natively support
      */
     SkISize getScaledDimensions(float desiredScale) const {
         return this->onGetScaledDimensions(desiredScale);
     }
 
     /**
      *  Return (via desiredSubset) a subset which can decoded from this codec,
      *  or false if this codec cannot decode subsets or anything similar to
      *  desiredSubset.
      *
@@ skipping 197 matching lines @@
     SkStream* stream() {
         return fStream.get();
     }
 
 private:
     const SkImageInfo       fInfo;
     SkAutoTDelete<SkStream> fStream;
     bool                    fNeedsRewind;
 };
 #endif // SkCodec_DEFINED