Revert of Use NGLogicalRect instead of NGExclusion for exclusions.

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

Index: third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.h
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.h b/third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.h
index 5b22d50a8a88b7f496778c43b843193f78e52935..37914464d2b7674a41a23008dcee11d736ed4f50 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.h
+++ b/third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.h
@@ -27,6 +27,33 @@
   FragmentRegion
 };
 
+struct NGExclusion : public GarbageCollected<NGExclusion> {
+  NGExclusion(LayoutUnit top,
+              LayoutUnit right,
+              LayoutUnit bottom,
+              LayoutUnit left) {
+    rect.offset.left = left;
+    rect.offset.top = top;
+    rect.size.width = right - left;
+    rect.size.height = bottom - top;
+  }
+  LayoutUnit Top() const { return rect.offset.top; }
+  LayoutUnit Right() const { return rect.size.width + rect.offset.left; }
+  LayoutUnit Bottom() const { return rect.size.height + rect.offset.top; }
+  LayoutUnit Left() const { return rect.offset.left; }
+
+  String ToString() const {
+    return String::format("%s,%s %sx%s",
+                          rect.offset.left.toString().ascii().data(),
+                          rect.offset.top.toString().ascii().data(),
+                          rect.size.width.toString().ascii().data(),
+                          rect.size.height.toString().ascii().data());
+  }
+  NGPhysicalRect rect;
+
+  DEFINE_INLINE_TRACE() {}
+};
+
 // The NGPhysicalConstraintSpace contains the underlying data for the
 // NGConstraintSpace. It is not meant to be used directly as all members are in
 // the physical coordinate space. Instead NGConstraintSpace should be used.
@@ -45,11 +72,11 @@
 
   NGPhysicalSize ContainerSize() const { return container_size_; }
 
-  void AddExclusion(const NGLogicalRect&, unsigned options = 0);
-  const Vector<std::unique_ptr<const NGLogicalRect>>& Exclusions(
+  void AddExclusion(const NGExclusion*, unsigned options = 0);
+  const HeapVector<Member<const NGExclusion>>& Exclusions(
       unsigned options = 0) const;
 
-  DEFINE_INLINE_TRACE() {}
+  DEFINE_INLINE_TRACE() { visitor->trace(exclusions_); }
 
  private:
   friend class NGConstraintSpace;
@@ -67,7 +94,7 @@
   // formatting Context
   unsigned is_new_fc_ : 1;
 
-  Vector<std::unique_ptr<const NGLogicalRect>> exclusions_;
+  HeapVector<Member<const NGExclusion>> exclusions_;
 };
 
 }  // namespace blink