SkSL performance improvements

src/sksl/ir/SkSLSwizzle.h

Index: src/sksl/ir/SkSLSwizzle.h
diff --git a/src/sksl/ir/SkSLSwizzle.h b/src/sksl/ir/SkSLSwizzle.h
index ce360d18471c88546990d8042fc731d37fd36bcb..4b4750faa5050f39a1675b8687cedf234e812543 100644
--- a/src/sksl/ir/SkSLSwizzle.h
+++ b/src/sksl/ir/SkSLSwizzle.h
@@ -18,9 +18,8 @@ namespace SkSL {
  * instance, swizzling a vec3 with two components will result in a vec2. It is possible to swizzle
  * with more components than the source vector, as in 'vec2(1).xxxx'.
  */
-static std::shared_ptr<Type> get_type(Expression& value, 
-                                      size_t count) {
-    std::shared_ptr<Type> base = value.fType->componentType();
+static const Type& get_type(Expression& value, size_t count) {
+    const Type& base = value.fType.componentType();
     if (count == 1) {
         return base;
     }