[LayoutNG] Make NGLineBuilder work with inline floats

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

Index: third_party/WebKit/Source/core/layout/ng/ng_space_utils.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_space_utils.h b/third_party/WebKit/Source/core/layout/ng/ng_space_utils.h
index d583b17a828bd789e7c63d5898d18c740135374a..1ce6b779071c5143b1ed11a5205ea0a25b5434d9 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_space_utils.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_space_utils.h
@@ -28,6 +28,12 @@ CORE_EXPORT WTF::Optional<LayoutUnit> GetClearanceOffset(
     const std::shared_ptr<NGExclusions>& exclusions,
     const ComputedStyle& style);
 
+// Whether child's constraint space should shrink to its intrinsic width.
+// This is needed for buttons, select, input, floats and orthogonal children.
+// See LayoutBox::sizesLogicalWidthToFitContent for the rationale behind this.
+bool ShouldShrinkToFit(const NGConstraintSpace& parent_space,
+                       const ComputedStyle& style);
+
 }  // namespace blink
 
 #endif  // NGSpaceUtils_h