Mojo: Move mojo/public/bindings to mojo/public/tools/bindings.

mojo/public/bindings/generators/cpp_templates/struct_declaration.tmpl

-{%- import "struct_macros.tmpl" as struct_macros %}
-{%- set class_name = struct.name ~ "_Data" -%}
-
-class {{class_name}} {
- public:
-  typedef {{struct.name}} Wrapper;
-
-  static {{class_name}}* New(mojo::Buffer* buf, mojo::Buffer::Destructor dtor = NULL);
-
-{#--- Setters -#}
-{{ struct_macros.setters(struct) }}
-
-{#--- Getters -#}
-{{ struct_macros.getters(struct) }}
-
-  size_t ComputeSize() const;
-  {{class_name}}* Clone(mojo::Buffer* buf) const;
-  void CloseHandles();
-  void EncodePointersAndHandles(std::vector<mojo::Handle>* handles);
-  bool DecodePointersAndHandles(mojo::Message* message);
-
- private:
-  {{class_name}}();
-  ~{{class_name}}();  // NOT IMPLEMENTED
-
-  mojo::internal::StructHeader _header_;
-{{ struct_macros.fields(struct) }}
-};
-MOJO_COMPILE_ASSERT(sizeof({{class_name}}) == {{struct.packed|struct_size}},
-                    bad_sizeof_{{class_name}});