Switch SkMagnifierImageFilter over to new onFilterImage interface

include/effects/SkMagnifierImageFilter.h

 /*
  * Copyright 2012 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 SkMagnifierImageFilter_DEFINED
 #define SkMagnifierImageFilter_DEFINED
 
 #include "SkRect.h"
 #include "SkImageFilter.h"
 
 class SK_API SkMagnifierImageFilter : public SkImageFilter {
 public:
-    static sk_sp<SkImageFilter> Make(const SkRect& src, SkScalar inset, sk_sp<SkImageFilter> input);
+    static sk_sp<SkImageFilter> Make(const SkRect& src, SkScalar inset,
+                                     sk_sp<SkImageFilter> input,
+                                     const CropRect* cropRect = nullptr);
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkMagnifierImageFilter)
 
 #ifdef SK_SUPPORT_LEGACY_IMAGEFILTER_PTR
     static SkImageFilter* Create(const SkRect& src, SkScalar inset,
                                  SkImageFilter* input = nullptr) {
         return Make(src, inset, sk_ref_sp<SkImageFilter>(input)).release();
     }
 #endif
 
 protected:
-    SkMagnifierImageFilter(const SkRect& srcRect, SkScalar inset, sk_sp<SkImageFilter> input);
+    SkMagnifierImageFilter(const SkRect& srcRect,
+                           SkScalar inset,
+                           sk_sp<SkImageFilter> input,
+                           const CropRect* cropRect);
     void flatten(SkWriteBuffer&) const override;
 
-    bool onFilterImageDeprecated(Proxy*, const SkBitmap& src, const Context&,
-                                 SkBitmap* result, SkIPoint* offset) const override;
-#if SK_SUPPORT_GPU
-    bool asFragmentProcessor(GrFragmentProcessor**, GrTexture*, const SkMatrix&,
-                             const SkIRect& bounds) const override;
-#endif
+    sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
+                                        SkIPoint* offset) const override;
 
 private:
     SkRect fSrcRect;
     SkScalar fInset;
     typedef SkImageFilter INHERITED;
 };
 
 #endif