SkPDF: Add sk_sp setters; .release() becomes std::move()

src/pdf/SkPDFUtils.cpp

Index: src/pdf/SkPDFUtils.cpp
diff --git a/src/pdf/SkPDFUtils.cpp b/src/pdf/SkPDFUtils.cpp
index 30d6ee7d68899b7f3415352abb668d1966c432fb..f305765389685625d3bc7d5a8310077d129f1bc6 100644
--- a/src/pdf/SkPDFUtils.cpp
+++ b/src/pdf/SkPDFUtils.cpp
@@ -18,9 +18,8 @@
 
 #include <cmath>
 
-//static
-SkPDFArray* SkPDFUtils::RectToArray(const SkRect& rect) {
-    SkPDFArray* result = new SkPDFArray();
+sk_sp<SkPDFArray> SkPDFUtils::RectToArray(const SkRect& rect) {
+    auto result = sk_make_sp<SkPDFArray>();
     result->reserve(4);
     result->appendScalar(rect.fLeft);
     result->appendScalar(rect.fTop);
@@ -29,14 +28,13 @@ SkPDFArray* SkPDFUtils::RectToArray(const SkRect& rect) {
     return result;
 }
 
-// static
-SkPDFArray* SkPDFUtils::MatrixToArray(const SkMatrix& matrix) {
+sk_sp<SkPDFArray> SkPDFUtils::MatrixToArray(const SkMatrix& matrix) {
     SkScalar values[6];
     if (!matrix.asAffine(values)) {
         SkMatrix::SetAffineIdentity(values);
     }
 
-    SkPDFArray* result = new SkPDFArray;
+    auto result = sk_make_sp<SkPDFArray>();
     result->reserve(6);
     for (size_t i = 0; i < SK_ARRAY_COUNT(values); i++) {
         result->appendScalar(values[i]);