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

src/effects/SkPictureImageFilter.cpp

 /*
  * 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.
  */
 
 #include "SkPictureImageFilter.h"
 #include "SkDevice.h"
 #include "SkCanvas.h"
@@ skipping 66 matching lines @@
             fPicture->flatten(buffer);
         }
     }
     buffer.writeRect(fCropRect);
     buffer.writeInt(fPictureResolution);
     if (kLocalSpace_PictureResolution == fPictureResolution) {
         buffer.writeInt(fFilterQuality);
     }
 }
 
-bool SkPictureImageFilter::onFilterImage(Proxy* proxy, const SkBitmap&, const Context& ctx,
-                                         SkBitmap* result, SkIPoint* offset) const {
+bool SkPictureImageFilter::onFilterImageDeprecated(Proxy* proxy, const SkBitmap&,
+                                                   const Context& ctx,
+                                                   SkBitmap* result, SkIPoint* offset) const {
     if (!fPicture) {
         offset->fX = offset->fY = 0;
         return true;
     }
 
     SkRect floatBounds;
     ctx.ctm().mapRect(&floatBounds, fCropRect);
     SkIRect bounds = floatBounds.roundOut();
     if (!bounds.intersect(ctx.clipBounds())) {
         return false;
@@ skipping 68 matching lines @@
     str->appendf("crop: (%f,%f,%f,%f) ", 
                  fCropRect.fLeft, fCropRect.fTop, fCropRect.fRight, fCropRect.fBottom);
     if (fPicture) {
         str->appendf("picture: (%f,%f,%f,%f)",
                      fPicture->cullRect().fLeft, fPicture->cullRect().fTop,
                      fPicture->cullRect().fRight, fPicture->cullRect().fBottom);
     }
     str->append(")");
 }
 #endif