[LayoutNG] Remove derived constraint spaces from opportunity iterator.

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NGPhysicalConstraintSpace_h
 #define NGPhysicalConstraintSpace_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_units.h"
 #include "platform/heap/Handle.h"
@@ skipping 14 matching lines @@
   FragmentPage,
   FragmentColumn,
   FragmentRegion
 };
 
 struct NGExclusion : public GarbageCollected<NGExclusion> {
   NGExclusion(LayoutUnit top,
               LayoutUnit right,
               LayoutUnit bottom,
               LayoutUnit left) {
-    rect.location.left = left;
-    rect.location.top = top;
+    rect.offset.left = left;
+    rect.offset.top = top;
     rect.size.width = right - left;
     rect.size.height = bottom - top;
   }
-  LayoutUnit Top() const { return rect.location.top; }
-  LayoutUnit Right() const { return rect.size.width + rect.location.left; }
-  LayoutUnit Bottom() const { return rect.size.height + rect.location.top; }
-  LayoutUnit Left() const { return rect.location.left; }
+  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.location.left.toString().ascii().data(),
-                          rect.location.top.toString().ascii().data(),
+                          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
@@ skipping 27 matching lines @@
   // Whether the current constraint space is for the newly established
   // formatting Context
   unsigned is_new_fc_ : 1;
 
   HeapVector<Member<const NGExclusion>> exclusions_;
 };
 
 }  // namespace blink
 
 #endif  // NGPhysicalConstraintSpace_h