[LayoutNG] Make NGLineBuilder work with inline floats

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

Index: third_party/WebKit/Source/core/layout/ng/ng_space_utils.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_space_utils.cc b/third_party/WebKit/Source/core/layout/ng/ng_space_utils.cc
index 98ecc61f2ff93e7a3f385b83e735a3d4efcc8128..4c8143b0da7fa63c5812017555a174c167f47114 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_space_utils.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_space_utils.cc
@@ -79,4 +79,17 @@ WTF::Optional<LayoutUnit> GetClearanceOffset(
   return WTF::nullopt;
 }
 
+bool ShouldShrinkToFit(const NGConstraintSpace& parent_space,
+                       const ComputedStyle& style) {
+  NGWritingMode child_writing_mode =
+      FromPlatformWritingMode(style.getWritingMode());
+  // Whether the child and the containing block are parallel to each other.
+  // Example: vertical-rl and vertical-lr
+  bool is_in_parallel_flow =
+      IsParallelWritingMode(parent_space.WritingMode(), child_writing_mode);
+
+  return style.display() == EDisplay::kInlineBlock || style.isFloating() ||
+         !is_in_parallel_flow;
+}
+
 }  // namespace blink