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

src/effects/SkDropShadowImageFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDropShadowImageFilter.h"
 
 #include "SkBitmap.h"
@@ skipping 35 matching lines @@
 void SkDropShadowImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writeScalar(fDx);
     buffer.writeScalar(fDy);
     buffer.writeScalar(fSigmaX);
     buffer.writeScalar(fSigmaY);
     buffer.writeColor(fColor);
     buffer.writeInt(static_cast<int>(fShadowMode));
 }
 
-bool SkDropShadowImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& source,
-                                            const Context& ctx,
-                                            SkBitmap* result, SkIPoint* offset) const
-{
+bool SkDropShadowImageFilter::onFilterImageDeprecated(Proxy* proxy, const SkBitmap& source,
+                                                      const Context& ctx,
+                                                      SkBitmap* result, SkIPoint* offset) const {
     SkBitmap src = source;
     SkIPoint srcOffset = SkIPoint::Make(0, 0);
-    if (!this->filterInput(0, proxy, source, ctx, &src, &srcOffset))
+    if (!this->filterInputDeprecated(0, proxy, source, ctx, &src, &srcOffset))
         return false;
 
     SkIRect srcBounds = src.bounds();
     srcBounds.offset(srcOffset);
     SkIRect bounds;
     if (!this->applyCropRect(ctx, srcBounds, &bounds)) {
         return false;
     }
 
     SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
@@ skipping 80 matching lines @@
         "kDrawShadowAndForeground", "kDrawShadowOnly"
     };
 
     static_assert(kShadowModeCount == SK_ARRAY_COUNT(gModeStrings), "enum_mismatch");
 
     str->appendf(" mode: %s", gModeStrings[fShadowMode]);
 
     str->append(")");
 }
 #endif