use unique_ptr for codec factories

Will need guards for android (at least)

Bug: skia:
Change-Id: I2bb8e656997984489ef1f2e41cd3d301c4e7b947
Reviewed-on: https://skia-review.googlesource.com/26040
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
diff --git a/dm/DM.cpp b/dm/DM.cpp
index 1b88889..698a79c 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -531,7 +531,7 @@
         info("Couldn't read %s.", path.c_str());
         return;
     }
-    std::unique_ptr<SkCodec> codec(SkCodec::NewFromData(encoded));
+    std::unique_ptr<SkCodec> codec = SkCodec::MakeFromData(encoded);
     if (nullptr == codec.get()) {
         info("Couldn't create codec for %s.", path.c_str());
         return;