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

base/containers/stack_container_unittest.cc

Index: base/containers/stack_container_unittest.cc
diff --git a/base/containers/stack_container_unittest.cc b/base/containers/stack_container_unittest.cc
index 05c733a4a79b4e0f63d9852955877c59dcfbd377..73ee375844eb9270eb72becb7758f3940423b8ba 100644
--- a/base/containers/stack_container_unittest.cc
+++ b/base/containers/stack_container_unittest.cc
@@ -120,11 +120,11 @@ class AlignedData {
 TEST(StackContainer, BufferAlignment) {
   StackVector<wchar_t, 16> text;
   text->push_back(L'A');
-  EXPECT_ALIGNED(&text[0], ALIGNOF(wchar_t));
+  EXPECT_ALIGNED(&text[0], alignof(wchar_t));
 
   StackVector<double, 1> doubles;
   doubles->push_back(0.0);
-  EXPECT_ALIGNED(&doubles[0], ALIGNOF(double));
+  EXPECT_ALIGNED(&doubles[0], alignof(double));
 
   StackVector<AlignedData<16>, 1> aligned16;
   aligned16->push_back(AlignedData<16>());