Revert of Remove SK_SUPPORT_LEGACY_DEEPFLATTENING.

src/effects/SkTileImageFilter.cpp

Index: src/effects/SkTileImageFilter.cpp
diff --git a/src/effects/SkTileImageFilter.cpp b/src/effects/SkTileImageFilter.cpp
index d640ac7adbd969331c8a43e98b15dddc64027b39..04c62d05740e864b5da18e2c913a1673808bab8b 100644
--- a/src/effects/SkTileImageFilter.cpp
+++ b/src/effects/SkTileImageFilter.cpp
@@ -93,6 +93,15 @@
     return true;
 }
 
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+SkTileImageFilter::SkTileImageFilter(SkReadBuffer& buffer)
+  : INHERITED(1, buffer) {
+    buffer.readRect(&fSrcRect);
+    buffer.readRect(&fDstRect);
+    buffer.validate(buffer.isValid() && SkIsValidRect(fSrcRect) && SkIsValidRect(fDstRect));
+}
+#endif
+
 SkFlattenable* SkTileImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     SkRect src, dst;