Revert r273664

Revert change until build issues with MSVC can be resolved.

llvm-svn: 273670

llvm/include/llvm/Support/TrailingObjects.h

@@ -342,50 +342,6 @@ class TrailingObjects : private trailing_objects_internal::TrailingObjectsImpl<
                        TrailingTys, size_t>::type... Counts) {
     return sizeof(BaseTy) + ParentType::additionalSizeToAllocImpl(0, Counts...);
   }
-
-  /// A type where its ::with_counts template member has a ::type member
-  /// suitable for use as uninitialized storage for an object with the given
-  /// trailing object counts. The template arguments are similar to those
-  /// of additionalSizeToAlloc.
-  ///
-  /// Use with FixedSizeStorageOwner, e.g.:
-  ///
-  /// \code{.cpp}
-  ///
-  /// MyObj::FixedSizeStorage<void *>::with_counts<1u>::type myStackObjStorage;
-  /// MyObj::FixedSizeStorageOwner
-  ///     myStackObjOwner(new ((void *)&myStackObjStorage) MyObj);
-  /// MyObj *const myStackObjPtr = myStackObjOwner.get();
-  ///
-  /// \endcode
-  template <typename... Tys> struct FixedSizeStorage {
-    template <size_t... Counts> struct with_counts {
-      typedef llvm::AlignedCharArray<
-          llvm::AlignOf<BaseTy>::Alignment, totalSizeToAlloc<Tys...>(Counts...)
-          > type;
-    };
-  };
-
-  /// A type that acts as the owner for an object placed into fixed storage.
-  class FixedSizeStorageOwner {
-  public:
-    FixedSizeStorageOwner(BaseTy *p) : p(p) {}
-    ~FixedSizeStorageOwner() {
-      assert(p && "FixedSizeStorageOwner owns null?");
-      p->~BaseTy();
-    }
-
-    BaseTy *get() { return p; }
-    const BaseTy *get() const { return p; }
-
-  private:
-    FixedSizeStorageOwner(const FixedSizeStorageOwner &) = delete;
-    FixedSizeStorageOwner(FixedSizeStorageOwner &&) = delete;
-    FixedSizeStorageOwner &operator=(const FixedSizeStorageOwner &) = delete;
-    FixedSizeStorageOwner &operator=(FixedSizeStorageOwner &&) = delete;
-
-    BaseTy *const p;
-  };
 };
 
 } // end namespace llvm