Revert of Remove unused (by clients) SkUnitMapper (https://codereview.chromium.org/283273002/)

include/core/SkPicture.h

 
 /*
  * Copyright 2007 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 SkPicture_DEFINED
@@ skipping 309 matching lines @@
     // V17: SkPixelRef now writes SkImageInfo
     // V18: SkBitmap now records x,y for its pixelref origin, instead of offset.
     // V19: encode matrices and regions into the ops stream
     // V20: added bool to SkPictureImageFilter's serialization (to allow SkPicture serialization)
     // V21: add pushCull, popCull
     // V22: SK_PICT_FACTORY_TAG's size is now the chunk size in bytes
     // V23: SkPaint::FilterLevel became a real enum
     // V24: SkTwoPointConicalGradient now has fFlipped flag for gradient flipping
     // V25: SkDashPathEffect now only writes phase and interval array when flattening
     // V26: Removed boolean from SkColorShader for inheriting color from SkPaint.
-    // V27: Remove SkUnitMapper from gradients (and skia).
 
     // Note: If the picture version needs to be increased then please follow the
     // steps to generate new SKPs in (only accessible to Googlers): http://goo.gl/qATVcw
 
     // Only SKPs within the min/current picture version range (inclusive) can be read.
     static const uint32_t MIN_PICTURE_VERSION = 19;
-    static const uint32_t CURRENT_PICTURE_VERSION = 27;
+    static const uint32_t CURRENT_PICTURE_VERSION = 26;
 
     mutable uint32_t      fUniqueID;
 
     // fPlayback, fRecord, fWidth & fHeight are protected to allow derived classes to
     // install their own SkPicturePlayback-derived players,SkPictureRecord-derived
     // recorders and set the picture size
     SkPicturePlayback*    fPlayback;
     SkPictureRecord*      fRecord;
     int                   fWidth, fHeight;
     const AccelData*      fAccelData;
@@ skipping 171 matching lines @@
     typedef SkRefCnt INHERITED;
 };
 
 #endif
 
 #ifdef SK_SUPPORT_LEGACY_PICTURE_HEADERS
 #include "SkPictureRecorder.h"
 #endif
 
 #endif