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

gm/imagefiltersbase.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkColorFilter.h"
@@ skipping 16 matching lines @@
         }
     };
     static FailImageFilter* Create() { return new FailImageFilter; }
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(FailImageFilter)
 
 protected:
     FailImageFilter() : INHERITED(0, nullptr) {}
 
-    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 {
         return false;
     }
 
 private:
     typedef SkImageFilter INHERITED;
 };
 
 static FailImageFilter::Registrar gReg0;
 
 SkFlattenable* FailImageFilter::CreateProc(SkReadBuffer& buffer) {
@@ skipping 20 matching lines @@
     };
     static IdentityImageFilter* Create(SkImageFilter* input = nullptr) {
         return new IdentityImageFilter(input);
     }
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(IdentityImageFilter)
 protected:
     IdentityImageFilter(SkImageFilter* input) : INHERITED(1, &input) {}
 
-    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 {
         *result = src;
         offset->set(0, 0);
         return true;
     }
 
 private:
     typedef SkImageFilter INHERITED;
 };
 
 static IdentityImageFilter::Registrar gReg1;
@@ skipping 227 matching lines @@
 class ImageFiltersText_CF : public ImageFiltersTextBaseGM {
 public:
     ImageFiltersText_CF() : ImageFiltersTextBaseGM("color") {}
 
     void installFilter(SkPaint* paint) override {
         paint->setColorFilter(SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode))->unref();
     }
 };
 DEF_GM( return new ImageFiltersText_CF; )