Revert of Use NGLogicalRect instead of NGExclusion for exclusions.

third_party/WebKit/Source/core/layout/ng/ng_fragment.cc

Index: third_party/WebKit/Source/core/layout/ng/ng_fragment.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_fragment.cc b/third_party/WebKit/Source/core/layout/ng/ng_fragment.cc
index 6c5cdbd5b51040294b9c17d231aab4a1daf5d3d7..ca9dcb63a722bd2fbd1c173c590286b3d543cbe3 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_fragment.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_fragment.cc
@@ -4,15 +4,14 @@
 
 #include "core/layout/ng/ng_fragment.h"
 
-#include "core/layout/ng/ng_macros.h"
 #include "core/layout/ng/ng_physical_fragment.h"
 
 namespace blink {
 
 NGMarginStrut NGFragment::MarginStrut() const {
-  WRITING_MODE_IGNORED(
-      "Accessing the margin strut ignoring the writing mode here is fine."
-      "A margin strut is never set for a fragment");
+  // NOTE: Accessing the margin strut ignoring the writing mode here is fine.
+  // Changing the writing mode establishes a new formatting context, for which
+  // a margin strut is never set for a fragment.
   return toNGPhysicalFragment(physical_fragment_)->MarginStrut();
 }