Revert of SkSL performance improvements

src/sksl/ir/SkSLTypeReference.h

Index: src/sksl/ir/SkSLTypeReference.h
diff --git a/src/sksl/ir/SkSLTypeReference.h b/src/sksl/ir/SkSLTypeReference.h
index 8f2ab4fe0ef139e9b1de4b6bc3623829a6442250..5f4990f35dbc53bcfcadd4eb4b5a7ce1b1ea1e6e 100644
--- a/src/sksl/ir/SkSLTypeReference.h
+++ b/src/sksl/ir/SkSLTypeReference.h
@@ -17,16 +17,16 @@
  * always eventually replaced by Constructors in valid programs.
  */
 struct TypeReference : public Expression {
-    TypeReference(Position position, const Type& type)
-    : INHERITED(position, kTypeReference_Kind, *kInvalid_Type)
-    , fValue(type) {}
+    TypeReference(Position position, std::shared_ptr<Type> type)
+    : INHERITED(position, kTypeReference_Kind, kInvalid_Type)
+    , fValue(std::move(type)) {}
 
     std::string description() const override {
     	ASSERT(false);
     	return "<type>";
     }
 
-    const Type& fValue;
+    const std::shared_ptr<Type> fValue;
 
     typedef Expression INHERITED;
 };