Mojo: Simplify typemap usage.

mojo/public/cpp/bindings/tests/pickled_struct_blink.h

Index: mojo/public/cpp/bindings/tests/pickled_struct_blink.h
diff --git a/mojo/public/cpp/bindings/tests/pickled_struct_blink.h b/mojo/public/cpp/bindings/tests/pickled_struct_blink.h
index ce5b3644d334bef1f0bea017e2a8393ebee91ea0..c763c6e94e7c511f723637ce4deb693811babc65 100644
--- a/mojo/public/cpp/bindings/tests/pickled_struct_blink.h
+++ b/mojo/public/cpp/bindings/tests/pickled_struct_blink.h
@@ -32,8 +32,11 @@ class PickledStructBlink {
  public:
   PickledStructBlink();
   PickledStructBlink(int foo, int bar);
+  PickledStructBlink(PickledStructBlink&& other) = default;
   ~PickledStructBlink();
 
+  PickledStructBlink& operator=(PickledStructBlink&& other) = default;
+
   int foo() const { return foo_; }
   void set_foo(int foo) {
     DCHECK_GE(foo, 0);