Revert of Remove SK_SUPPORT_LEGACY_DEEPFLATTENING.

include/core/SkMaskFilter.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 SkMaskFilter_DEFINED
@@ skipping 135 matching lines @@
      *  provided BlurRec parameter. If this effect cannot be represented as a BlurRec, return false
      *  and ignore the BlurRec parameter.
      */
     virtual bool asABlur(BlurRec*) const;
 
     SK_TO_STRING_PUREVIRT()
     SK_DEFINE_FLATTENABLE_TYPE(SkMaskFilter)
 
 protected:
     SkMaskFilter() {}
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+    // empty for now, but lets get our subclass to remember to init us for the future
+    SkMaskFilter(SkReadBuffer& buffer) : INHERITED(buffer) {}
+#endif
 
     enum FilterReturn {
         kFalse_FilterReturn,
         kTrue_FilterReturn,
         kUnimplemented_FilterReturn
     };
 
     struct NinePatch {
         SkMask      fMask;      // fBounds must have [0,0] in its top-left
         SkIRect     fOuterRect; // width/height must be >= fMask.fBounds'
@@ skipping 41 matching lines @@
      mask and then call filterMask(). If this returns true, the specified blitter will be called
      to render that mask. Returns false if filterMask() returned false.
      */
     bool filterRRect(const SkRRect& devRRect, const SkMatrix& ctm, const SkRasterClip&,
                      SkBlitter*, SkPaint::Style style) const;
 
     typedef SkFlattenable INHERITED;
 };
 
 #endif