Merge "Libbase: add C++11 support to DISALLOW_IMPLICIT_CONSTRUCTORS"

// This should be used in the private: declarations for a class

// that wants to prevent anyone from instantiating it. This is

// especially useful for classes containing only static methods.

//

// When building with C++11 toolchains, just use the language support

// for explicitly deleted methods.

#if __cplusplus >= 201103L

#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \

  TypeName() = delete;                           \

  DISALLOW_COPY_AND_ASSIGN(TypeName)

#else

#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \

  TypeName();                                    \

  DISALLOW_COPY_AND_ASSIGN(TypeName)

#endif

// The arraysize(arr) macro returns the # of elements in an array arr.

// The expression is a compile-time constant, and therefore can be