[c++11] Remove remnants of pre-C++11 delete, final and override.

These macros are not needed anymore, so there's no point in supporting
them.

Review URL: https://codereview.chromium.org/1123723003

Cr-Commit-Position: refs/heads/master@{#28214}

include/v8config.h

@@ -162,7 +162,6 @@
 //  V8_HAS_CXX11_ALIGNAS        - alignas specifier supported
 //  V8_HAS_CXX11_ALIGNOF        - alignof(type) operator supported
 //  V8_HAS_CXX11_STATIC_ASSERT  - static_assert() supported
-//  V8_HAS_CXX11_DELETE         - deleted functions supported
 //
 // Compiler-specific feature detection
 //
@@ -188,7 +187,6 @@
 //  V8_HAS_DECLSPEC_DEPRECATED          - __declspec(deprecated) supported
 //  V8_HAS_DECLSPEC_NOINLINE            - __declspec(noinline) supported
 //  V8_HAS_DECLSPEC_SELECTANY           - __declspec(selectany) supported
-//  V8_HAS___FINAL                      - __final supported in non-C++11 mode
 //  V8_HAS___FORCEINLINE                - __forceinline supported
 //
 // Note that testing for compilers and/or features must be done using #if
@@ -228,7 +226,6 @@
 
 # define V8_HAS_CXX11_ALIGNAS (__has_feature(cxx_alignas))
 # define V8_HAS_CXX11_STATIC_ASSERT (__has_feature(cxx_static_assert))
-# define V8_HAS_CXX11_DELETE (__has_feature(cxx_deleted_functions))
 
 #elif defined(__GNUC__)
 
@@ -270,12 +267,6 @@
 #  define V8_HAS_CXX11_ALIGNAS (V8_GNUC_PREREQ(4, 8, 0))
 #  define V8_HAS_CXX11_ALIGNOF (V8_GNUC_PREREQ(4, 8, 0))
 #  define V8_HAS_CXX11_STATIC_ASSERT (V8_GNUC_PREREQ(4, 3, 0))
-#  define V8_HAS_CXX11_DELETE (V8_GNUC_PREREQ(4, 4, 0))
-#  define V8_HAS_CXX11_OVERRIDE (V8_GNUC_PREREQ(4, 7, 0))
-#  define V8_HAS_CXX11_FINAL (V8_GNUC_PREREQ(4, 7, 0))
-# else
-// '__final' is a non-C++11 GCC synonym for 'final', per GCC r176655.
-#  define V8_HAS___FINAL (V8_GNUC_PREREQ(4, 7, 0))
 # endif
 
 #elif defined(_MSC_VER)
@@ -284,9 +275,6 @@
 
 # define V8_HAS___ALIGNOF 1
 
-# define V8_HAS_CXX11_FINAL 1
-# define V8_HAS_CXX11_OVERRIDE 1
-
 # define V8_HAS_DECLSPEC_ALIGN 1
 # define V8_HAS_DECLSPEC_DEPRECATED 1
 # define V8_HAS_DECLSPEC_NOINLINE 1
@@ -353,26 +341,6 @@ declarator __attribute__((deprecated))
 #endif
 
 
-// A macro to specify that a method is deleted from the corresponding class.
-// Any attempt to use the method will always produce an error at compile time
-// when this macro can be implemented (i.e. if the compiler supports C++11).
-// If the current compiler does not support C++11, use of the annotated method
-// will still cause an error, but the error will most likely occur at link time
-// rather than at compile time. As a backstop, method declarations using this
-// macro should be private.
-// Use like:
-//   class A {
-//    private:
-//     A(const A& other) V8_DELETE;
-//     A& operator=(const A& other) V8_DELETE;
-//   };
-#if V8_HAS_CXX11_DELETE
-# define V8_DELETE = delete
-#else
-# define V8_DELETE /* NOT SUPPORTED */
-#endif
-
-
 // This macro allows to specify memory alignment for structs, classes, etc.
 // Use like:
 //   class V8_ALIGNED(16) MyClass { ... };

src/base/macros.h

@@ -234,9 +234,9 @@ V8_INLINE Dest bit_cast(Source const& source) {
 
 // A macro to disallow the evil copy constructor and operator= functions
 // This should be used in the private: declarations for a class
-#define DISALLOW_COPY_AND_ASSIGN(TypeName)  \
-  TypeName(const TypeName&) V8_DELETE;      \
-  void operator=(const TypeName&) V8_DELETE
+#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
+  TypeName(const TypeName&) = delete;      \
+  void operator=(const TypeName&) = delete
 
 
 // A macro to disallow all the implicit constructors, namely the
@@ -245,8 +245,8 @@ V8_INLINE Dest bit_cast(Source const& source) {
 // 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.
-#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName)  \
-  TypeName() V8_DELETE;                           \
+#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
+  TypeName() = delete;                           \
   DISALLOW_COPY_AND_ASSIGN(TypeName)