[layoutng] Add a shrink-to-fit flag to the constraint space

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

Index: third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h
index a392af7a46970f2588c750f74ebaa5bb253669eb..cf836bdf882d9c94c144080ab85e616a50270d1c 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_constraint_space.h
@@ -94,6 +94,8 @@ class CORE_EXPORT NGConstraintSpace final
 
   bool IsFixedSizeBlock() const { return is_fixed_size_block_; }
 
+  bool HasForcedShrinkToFit() const { return has_forced_shrink_to_fit_; }

[ikilpatrick, 2016/12/22 00:06:14]

Comment explaining what this does? E.g.

Whether the child should shrink-to-fit if it's inline size is 'auto', instead of
taking up the inline available space.
E.g. this is used for floating, abs-pos, etc.

[ikilpatrick, 2016/12/22 00:06:14]

IsShrinkToFit? to keep in line with other bits?

[cbiesinger, 2016/12/22 03:34:25]

Done (both).

+
   // If specified a layout should produce a Fragment which fragments at the
   // blockSize if possible.
   NGFragmentationType BlockFragmentationType() const;
@@ -120,6 +122,7 @@ class CORE_EXPORT NGConstraintSpace final
                     NGLogicalSize percentage_resolution_size,
                     bool is_fixed_size_inline,
                     bool is_fixed_size_block,
+                    bool has_forced_shrink_to_fit,
                     bool is_inline_direction_triggers_scrollbar,
                     bool is_block_direction_triggers_scrollbar,
                     NGFragmentationType block_direction_fragmentation_type,
@@ -132,6 +135,8 @@ class CORE_EXPORT NGConstraintSpace final
   unsigned is_fixed_size_inline_ : 1;
   unsigned is_fixed_size_block_ : 1;
 
+  unsigned has_forced_shrink_to_fit_ : 1;
+
   unsigned is_inline_direction_triggers_scrollbar_ : 1;
   unsigned is_block_direction_triggers_scrollbar_ : 1;