Revert of Remove SK_SUPPORT_LEGACY_DEEPFLATTENING.

src/core/SkFlattenable.cpp

Index: src/core/SkFlattenable.cpp
diff --git a/src/core/SkFlattenable.cpp b/src/core/SkFlattenable.cpp
index 27efe7ece3611f193fa00c4498c321c9a38cc5ea..f8fdd4f00e8151af6274aa91e0799d59215060cc 100644
--- a/src/core/SkFlattenable.cpp
+++ b/src/core/SkFlattenable.cpp
@@ -8,6 +8,16 @@
 #include "SkFlattenable.h"
 #include "SkPtrRecorder.h"
 #include "SkReadBuffer.h"
+
+///////////////////////////////////////////////////////////////////////////////
+
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+bool SkFlattenable::NeedsDeepUnflatten(const SkReadBuffer& buffer) {
+    return false;  // TODO: looks like all this can go away too now?
+}
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
 
 SkNamedFactorySet::SkNamedFactorySet() : fNextAddedFactory(0) {}
 
@@ -46,6 +56,8 @@
     ((SkRefCnt*)ptr)->unref();
 }
 
+///////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 
 #define MAX_ENTRY_COUNT  1024