Generate a templated Clone method for all mojo structs.

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_PUBLIC_CPP_BINDINGS_TESTS_PICKLED_STRUCT_BLINK_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_TESTS_PICKLED_STRUCT_BLINK_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 14 matching lines @@
 // An implementation of a hypothetical PickledStruct type specifically for
 // consumers in Blink.
 //
 // To make things slightly more interesting, this variation of the type doesn't
 // support negative values. It'll DCHECK if you try to construct it with any,
 // and it will fail deserialization if negative values are decoded.
 class PickledStructBlink {
  public:
   PickledStructBlink();
   PickledStructBlink(int foo, int bar);
-  PickledStructBlink(PickledStructBlink&& other) = default;
+  PickledStructBlink(PickledStructBlink&& other);
   ~PickledStructBlink();
 
   PickledStructBlink& operator=(PickledStructBlink&& other) = default;
 
   int foo() const { return foo_; }
   void set_foo(int foo) {
     DCHECK_GE(foo, 0);
     foo_ = foo;
   }
 
@@ skipping 23 matching lines @@
   static void Write(base::Pickle* m, const param_type& p);
   static bool Read(const base::Pickle* m,
                    base::PickleIterator* iter,
                    param_type* r);
   static void Log(const param_type& p, std::string* l) {}
 };
 
 }  // namespace IPC
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_TESTS_PICKLED_STRUCT_BLINK_H_