[LayoutNG] Fix orthogonal writing mode child margin strut from being used in collapsing margins cal…

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

Index: third_party/WebKit/Source/core/layout/ng/ng_fragment_base.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_fragment_base.cc b/third_party/WebKit/Source/core/layout/ng/ng_fragment_base.cc
index 14ea494007e6e1b52690d9505cef603ef5440143..0193580f4274530889d7a892239262b452502d32 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_fragment_base.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_fragment_base.cc
@@ -41,11 +41,6 @@ LayoutUnit NGFragmentBase::BlockOffset() const {
              : physical_fragment_->LeftOffset();
 }
 
-NGMarginStrut NGFragmentBase::MarginStrut() const {
-  // TODO(layout-ng): Change MarginStrut to support writing direction.
-  return physical_fragment_->MarginStrut();
-}
-
 DEFINE_TRACE(NGFragmentBase) {
   visitor->trace(physical_fragment_);
 }