Index: third_party/WebKit/Source/core/layout/ng/ng_macros.h |
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_macros.h b/third_party/WebKit/Source/core/layout/ng/ng_macros.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..19cfb91356ec1febd5cab00d86a19b7e8b508419 |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/layout/ng/ng_macros.h |
@@ -0,0 +1,22 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef ng_macros_h |
+#define ng_macros_h |
+ |
+#include "base/macros.h" |
+ |
+namespace blink { |
+ |
+// Macro that can be used to annotate cases where it's OK to ignore writing |
+// mode. This is because changing the writing mode establishes a new formatting |
+// context and can be ignored while accessing some properties that are only |
+// stored in physical constraint space. Example: MarginStrut. |
+#ifndef WRITING_MODE_IGNORED |
+#define WRITING_MODE_IGNORED(message) |
+#endif |
+ |
+} // namespace blink |
+ |
+#endif // ng_macros_h |