change SkStreams to work with sk_sp<SkData> instead of SkData*

tests/PathTest.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <cmath>
 #include "SkCanvas.h"
 #include "SkGeometry.h"
@@ skipping 4065 matching lines @@
     REPORTER_ASSERT(reporter, a != b);
     a.reset();
     a.lineTo(1, 2);
     REPORTER_ASSERT(reporter, a == b);
 }
 
 static void compare_dump(skiatest::Reporter* reporter, const SkPath& path, bool force,
         bool dumpAsHex, const char* str) {
     SkDynamicMemoryWStream wStream;
     path.dump(&wStream, force, dumpAsHex);
-    sk_sp<SkData> data(wStream.copyToData());
+    sk_sp<SkData> data = wStream.detachAsData();
     REPORTER_ASSERT(reporter, data->size() == strlen(str));
     if (strlen(str) > 0) {
         REPORTER_ASSERT(reporter, !memcmp(data->data(), str, strlen(str)));
     } else {
         REPORTER_ASSERT(reporter, data->data() == nullptr || !memcmp(data->data(), str, strlen(str)));
     }
 }
 
 static void test_dump(skiatest::Reporter* reporter) {
     SkPath p;
@@ skipping 331 matching lines @@
     PathRefTest_Private::TestPathRef(reporter);
     PathTest_Private::TestPathrefListeners(reporter);
     test_dump(reporter);
     test_path_crbug389050(reporter);
     test_path_crbugskia2820(reporter);
     test_skbug_3469(reporter);
     test_skbug_3239(reporter);
     test_bounds_crbug_513799(reporter);
     test_fuzz_crbug_638223();
 }