Switch to standard integer types in components/, part 2 of 4.

components/html_viewer/ax_provider_apptest.cc

Index: components/html_viewer/ax_provider_apptest.cc
diff --git a/components/html_viewer/ax_provider_apptest.cc b/components/html_viewer/ax_provider_apptest.cc
index c77dfce3f766936ca6225612ec3830901c0e4fb5..588fad6c41114f96ffbd23b826ecb2a7310dc85a 100644
--- a/components/html_viewer/ax_provider_apptest.cc
+++ b/components/html_viewer/ax_provider_apptest.cc
@@ -2,8 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <stddef.h>
+#include <stdint.h>
+
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/macros.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/test_timeouts.h"