Fix SkData leaks at GrResourceKey::setCustomData() call sites.

tests/ResourceCacheTest.cpp

Index: tests/ResourceCacheTest.cpp
diff --git a/tests/ResourceCacheTest.cpp b/tests/ResourceCacheTest.cpp
index 65b7b7ca2de630613aedd57873427d470ffa7562..a4acab86a19a968fa97a229602420cfcfec0301a 100644
--- a/tests/ResourceCacheTest.cpp
+++ b/tests/ResourceCacheTest.cpp
@@ -851,7 +851,8 @@ static void test_duplicate_unique_key(skiatest::Reporter* reporter) {
         make_unique_key<0>(&key2, 0);
         SkAutoTUnref<TestResource> d(SkNEW_ARGS(TestResource, (context->getGpu())));
         int foo = 4132;
-        key2.setCustomData(SkData::NewWithCopy(&foo, sizeof(foo)));
+        SkAutoTUnref<SkData> data(SkData::NewWithCopy(&foo, sizeof(foo)));
+        key2.setCustomData(data.get());
         d->resourcePriv().setUniqueKey(key2);
     }
 
@@ -1240,7 +1241,8 @@ static void test_large_resource_count(skiatest::Reporter* reporter) {
 static void test_custom_data(skiatest::Reporter* reporter) {
     GrUniqueKey key1, key2;
     int foo = 4132;
-    key1.setCustomData(SkData::NewWithCopy(&foo, sizeof(foo)));
+    SkAutoTUnref<SkData> data(SkData::NewWithCopy(&foo, sizeof(foo)));
+    key1.setCustomData(data.get());
     REPORTER_ASSERT(reporter, *(int*) key1.getCustomData()->data() == 4132);
     REPORTER_ASSERT(reporter, key2.getCustomData() == nullptr);