Remove SK_SUPPORT_LEGACY_DEEPFLATTENING.

src/effects/SkDropShadowImageFilter.cpp

Index: src/effects/SkDropShadowImageFilter.cpp
diff --git a/src/effects/SkDropShadowImageFilter.cpp b/src/effects/SkDropShadowImageFilter.cpp
index 0ba8b234b7977f2ed18823c5e6e68b9c43f40fed..5bbb958e9cc8852e0a6281c255bef986eb95b9b8 100644
--- a/src/effects/SkDropShadowImageFilter.cpp
+++ b/src/effects/SkDropShadowImageFilter.cpp
@@ -29,24 +29,6 @@ SkDropShadowImageFilter::SkDropShadowImageFilter(SkScalar dx, SkScalar dy,
 {
 }
 
-#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
-SkDropShadowImageFilter::SkDropShadowImageFilter(SkReadBuffer& buffer)
- : INHERITED(1, buffer) {
-    fDx = buffer.readScalar();
-    fDy = buffer.readScalar();
-    fSigmaX = buffer.readScalar();
-    fSigmaY = buffer.readScalar();
-    fColor = buffer.readColor();
-    fShadowMode = buffer.isVersionLT(SkReadBuffer::kDropShadowMode_Version) ?
-                  kDrawShadowAndForeground_ShadowMode :
-                  static_cast<ShadowMode>(buffer.readInt());
-    buffer.validate(SkScalarIsFinite(fDx) &&
-                    SkScalarIsFinite(fDy) &&
-                    SkScalarIsFinite(fSigmaX) &&
-                    SkScalarIsFinite(fSigmaY));
-}
-#endif
-
 SkFlattenable* SkDropShadowImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     SkScalar dx = buffer.readScalar();