Revert of Creating framework for drawShadowedPicture

src/core/SkPicturePlayback.cpp

Index: src/core/SkPicturePlayback.cpp
diff --git a/src/core/SkPicturePlayback.cpp b/src/core/SkPicturePlayback.cpp
index 0bce09cdf2a0c8656bba602cf40c048daa54fbc8..60c4fe898dac64412654fbbf55c72f8bfaecef13 100644
--- a/src/core/SkPicturePlayback.cpp
+++ b/src/core/SkPicturePlayback.cpp
@@ -617,11 +617,9 @@
             canvas->translate(dx, dy);
         } break;
         case TRANSLATE_Z: {
-#ifdef SK_EXPERIMENTAL_SHADOWING
             SkScalar dz = reader->readScalar();
             canvas->translateZ(dz);
-#endif
-        } break;
+        }
         default:
             SkASSERTF(false, "Unknown draw type: %d", op);
     }