Mark existing image filter entry points that will be going away with Deprecated

include/effects/SkPictureImageFilter.h

 /*
  * Copyright 2013 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 SkPictureImageFilter_DEFINED
 #define SkPictureImageFilter_DEFINED
 
@@ skipping 43 matching lines @@
 
     virtual ~SkPictureImageFilter();
 
     /*  Constructs an SkPictureImageFilter object from an SkReadBuffer.
      *  Note: If the SkPictureImageFilter object construction requires bitmap
      *  decoding, the decoder must be set on the SkReadBuffer parameter by calling
      *  SkReadBuffer::setBitmapDecoder() before calling this constructor.
      *  @param SkReadBuffer Serialized picture data.
      */
     void flatten(SkWriteBuffer&) const override;
-    bool onFilterImage(Proxy*, const SkBitmap& src, const Context&, SkBitmap* result,
-                       SkIPoint* offset) const override;
+    bool onFilterImageDeprecated(Proxy*, const SkBitmap& src, const Context&, SkBitmap* result,
+                                 SkIPoint* offset) const override;
 
 private:
     explicit SkPictureImageFilter(const SkPicture* picture);
     SkPictureImageFilter(const SkPicture* picture, const SkRect& cropRect,
                          PictureResolution, SkFilterQuality);
 
     void drawPictureAtDeviceResolution(SkBaseDevice*, const SkIRect& deviceBounds,
                                        const Context&) const;
     void drawPictureAtLocalResolution(Proxy*, SkBaseDevice*, const SkIRect& deviceBounds,
                                       const Context&) const;
 
     const SkPicture*      fPicture;
     SkRect                fCropRect;
     PictureResolution     fPictureResolution;
     SkFilterQuality       fFilterQuality;
 
     typedef SkImageFilter INHERITED;
 };
 
 #endif