Simplify flattening to just write enough to call the factory

include/effects/SkLayerDrawLooper.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkLayerDrawLooper_DEFINED
 #define SkLayerDrawLooper_DEFINED
 
@@ skipping 63 matching lines @@
     };
 
     virtual SkDrawLooper::Context* createContext(SkCanvas*, void* storage) const SK_OVERRIDE;
 
     virtual size_t contextSize() const SK_OVERRIDE { return sizeof(LayerDrawLooperContext); }
 
     virtual bool asABlurShadow(BlurShadowRec* rec) const SK_OVERRIDE;
 
     SK_TO_STRING_OVERRIDE()
 
-    /// Implements Flattenable.
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+    static SkFlattenable* DeepCreateProc(SkReadBuffer& buffer) {
+        return CreateProc(buffer);
+    }
+    virtual Factory getFactory() const SK_OVERRIDE { return DeepCreateProc; }
+#else
     virtual Factory getFactory() const SK_OVERRIDE { return CreateProc; }
+#endif
     static SkFlattenable* CreateProc(SkReadBuffer& buffer);
 
 protected:
     SkLayerDrawLooper();
 
     virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
 private:
     struct Rec {
         Rec*    fNext;
@@ skipping 58 matching lines @@
         SkLayerDrawLooper* detachLooper();
 
     private:
         Rec* fRecs;
         Rec* fTopRec;
         int  fCount;
     };
 };
 
 #endif