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

include/effects/SkDisplacementMapEffect.h

Index: include/effects/SkDisplacementMapEffect.h
diff --git a/include/effects/SkDisplacementMapEffect.h b/include/effects/SkDisplacementMapEffect.h
index b486a8fdf08f30e92c382fe981279cd98236c68c..6aee97f43ac939cf27013616eaca2fda615c3ba6 100644
--- a/include/effects/SkDisplacementMapEffect.h
+++ b/include/effects/SkDisplacementMapEffect.h
@@ -31,11 +31,11 @@ public:
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkDisplacementMapEffect)
 
-    virtual bool onFilterImage(Proxy* proxy,
-                               const SkBitmap& src,
-                               const Context& ctx,
-                               SkBitmap* dst,
-                               SkIPoint* offset) const override;
+    bool onFilterImageDeprecated(Proxy* proxy,
+                                 const SkBitmap& src,
+                                 const Context& ctx,
+                                 SkBitmap* dst,
+                                 SkIPoint* offset) const override;
     void computeFastBounds(const SkRect& src, SkRect* dst) const override;
 
     virtual bool onFilterBounds(const SkIRect& src, const SkMatrix&,
@@ -44,7 +44,7 @@ public:
 
 #if SK_SUPPORT_GPU
     bool canFilterImageGPU() const override { return true; }
-    virtual bool filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
+    bool filterImageGPUDeprecated(Proxy* proxy, const SkBitmap& src, const Context& ctx,
                                 SkBitmap* result, SkIPoint* offset) const override;
 #endif