Move off SK_SUPPORT_LEGACY_DATA_FACTORIES.

tools/lua/lua_app.cpp

Index: tools/lua/lua_app.cpp
diff --git a/tools/lua/lua_app.cpp b/tools/lua/lua_app.cpp
index 6aea8ee43776a65aad26e7f227ab7b2814dfc86f..92623d0a208659ab22a53ea0870ae1f0a5acbc46 100644
--- a/tools/lua/lua_app.cpp
+++ b/tools/lua/lua_app.cpp
@@ -19,10 +19,10 @@ extern "C" {
     #include "lauxlib.h"
 }
 
-static SkData* read_into_data(const char file[]) {
-    SkData* data = SkData::NewFromFileName(file);
+static sk_sp<SkData> read_into_data(const char file[]) {
+    sk_sp<SkData> data(SkData::MakeFromFileName(file));
     if (!data) {
-        data = SkData::NewEmpty();
+        data = SkData::MakeEmpty();
     }
     return data;
 }
@@ -33,7 +33,7 @@ int tool_main(int argc, char** argv) {
     SkLua L;
 
     for (int i = 1; i < argc; ++i) {
-        SkData* data = nullptr;
+        sk_sp<SkData> data;
         const void* ptr;
         size_t len;
 
@@ -50,7 +50,6 @@ int tool_main(int argc, char** argv) {
             SkDebugf("failed to load %s\n", argv[i]);
             exit(-1);
         }
-        SkSafeUnref(data);
     }
     return 0;
 }