NGInlineLayoutAlgorithm should take margins of inline floats into account

third_party/WebKit/Source/core/layout/ng/ng_layout_algorithm.h

Index: third_party/WebKit/Source/core/layout/ng/ng_layout_algorithm.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_layout_algorithm.h b/third_party/WebKit/Source/core/layout/ng/ng_layout_algorithm.h
index 51c0c84c6fc8203e274de3fede90d1f1465662ac..86aff9f81f1fe0f97f7702f16c0ff6277953c932 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_layout_algorithm.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_layout_algorithm.h
@@ -6,6 +6,8 @@
 #define NGLayoutAlgorithm_h
 
 #include "core/CoreExport.h"
+#include "core/layout/ng/ng_constraint_space.h"
+#include "core/layout/ng/ng_layout_input_node.h"
 #include "core/layout/ng/ng_min_max_content_size.h"
 #include "wtf/Allocator.h"
 #include "wtf/Optional.h"
@@ -13,7 +15,7 @@
 namespace blink {
 
 class ComputedStyle;
-class NGConstraintSpace;
+struct NGBoxStrut;
 class NGLayoutResult;
 
 // Base class for all LayoutNG algorithms.
@@ -44,6 +46,9 @@ class CORE_EXPORT NGLayoutAlgorithm {
   }
 
  protected:
+  static NGBoxStrut ComputeMarginsForChild(const NGConstraintSpace& space,
+                                           NGLayoutInputNode* child);
+
   const NGConstraintSpace& ConstraintSpace() const {
     DCHECK(constraint_space_);
     return *constraint_space_;