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

src/effects/SkOffsetImageFilter.cpp

Index: src/effects/SkOffsetImageFilter.cpp
diff --git a/src/effects/SkOffsetImageFilter.cpp b/src/effects/SkOffsetImageFilter.cpp
index 2aac4f32d10dec1bd078317fac30cee1d59039aa..ddc8be8f95ae6aa258d6f1f358e2d25033eec394 100644
--- a/src/effects/SkOffsetImageFilter.cpp
+++ b/src/effects/SkOffsetImageFilter.cpp
@@ -14,14 +14,14 @@
 #include "SkMatrix.h"
 #include "SkPaint.h"
 
-bool SkOffsetImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& source,
-                                        const Context& ctx,
-                                        SkBitmap* result,
-                                        SkIPoint* offset) const {
+bool SkOffsetImageFilter::onFilterImageDeprecated(Proxy* proxy, const SkBitmap& source,
+                                                  const Context& ctx,
+                                                  SkBitmap* result,
+                                                  SkIPoint* offset) const {
     SkBitmap src = source;
     SkIPoint srcOffset = SkIPoint::Make(0, 0);
     if (!cropRectIsSet()) {
-        if (!this->filterInput(0, proxy, source, ctx, &src, &srcOffset)) {
+        if (!this->filterInputDeprecated(0, proxy, source, ctx, &src, &srcOffset)) {
             return false;
         }
 
@@ -32,7 +32,7 @@ bool SkOffsetImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& source,
         offset->fY = srcOffset.fY + SkScalarRoundToInt(vec.fY);
         *result = src;
     } else {
-        if (!this->filterInput(0, proxy, source, ctx, &src, &srcOffset)) {
+        if (!this->filterInputDeprecated(0, proxy, source, ctx, &src, &srcOffset)) {
             return false;
         }