Remove base's ALIGNOF/ALIGNAS in favor of alignof/alignas.

base/memory/manual_constructor.h

Index: base/memory/manual_constructor.h
diff --git a/base/memory/manual_constructor.h b/base/memory/manual_constructor.h
index f401f62d513803803efdd4de3a8b1de8ede9ba9f..459cb58207375da2d1c90ae10b1e533eda37f197 100644
--- a/base/memory/manual_constructor.h
+++ b/base/memory/manual_constructor.h
@@ -34,7 +34,7 @@ class ManualConstructor {
   // Support users creating arrays of ManualConstructor<>s.  This ensures that
   // the array itself has the correct alignment.
   static void* operator new[](size_t size) {
-    return AlignedAlloc(size, ALIGNOF(Type));
+    return AlignedAlloc(size, alignof(Type));
   }
   static void operator delete[](void* mem) {
     AlignedFree(mem);
@@ -67,7 +67,7 @@ class ManualConstructor {
   }
 
  private:
-  AlignedMemory<sizeof(Type), ALIGNOF(Type)> space_;
+  AlignedMemory<sizeof(Type), alignof(Type)> space_;
 };
 
 }  // namespace base