Mojo C++ bindings: switch the remaining callsites of the old serialization interface.

mojo/public/cpp/bindings/tests/serialization_warning_unittest.cc

Index: mojo/public/cpp/bindings/tests/serialization_warning_unittest.cc
diff --git a/mojo/public/cpp/bindings/tests/serialization_warning_unittest.cc b/mojo/public/cpp/bindings/tests/serialization_warning_unittest.cc
index 1204a0a6ecf88223684ea88be06372e1f3da87c2..c5089023b19eafa3cdad6e65741426b3cc744203 100644
--- a/mojo/public/cpp/bindings/tests/serialization_warning_unittest.cc
+++ b/mojo/public/cpp/bindings/tests/serialization_warning_unittest.cc
@@ -63,9 +63,9 @@ class SerializationWarningTest : public testing::Test {
 
     mojo::internal::SerializationContext context;
     mojo::internal::FixedBufferForTesting buf(
-        GetSerializedSize_(obj, &context));
+        mojo::internal::PrepareToSerialize<TPtr>(obj, &context));
     typename T::Data_* data;
-    Serialize_(std::move(obj), &buf, &data, &context);
+    mojo::internal::Serialize<TPtr>(obj, &buf, &data, &context);
 
     EXPECT_EQ(expected_warning, warning_observer_.last_warning());
   }