[LayoutNG] Move ng_block_layout_algorithm to use constraint space builder.

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

 // 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.
 
 #include "core/layout/ng/ng_box.h"
 
 #include "core/layout/LayoutBlockFlow.h"
 #include "core/layout/ng/layout_ng_block_flow.h"
 #include "core/layout/ng/ng_block_layout_algorithm.h"
 #include "core/layout/ng/ng_constraint_space.h"
@@ skipping 15 matching lines @@
 }
 
 bool NGBox::Layout(const NGConstraintSpace* constraint_space,
                    NGFragment** out) {
   if (layout_box_ && layout_box_->isOutOfFlowPositioned())
     layout_box_->containingBlock()->insertPositionedObject(layout_box_);
   // We can either use the new layout code to do the layout and then copy the
   // resulting size to the LayoutObject, or use the old layout code and
   // synthesize a fragment.
   if (CanUseNewLayout()) {
-    if (!algorithm_)
-      algorithm_ = new NGBlockLayoutAlgorithm(Style(), FirstChild());
     // Change the coordinate system of the constraint space.
     NGConstraintSpace* child_constraint_space = new NGConstraintSpace(
         FromPlatformWritingMode(Style()->getWritingMode()),
         FromPlatformDirection(Style()->direction()),
         constraint_space->MutablePhysicalSpace());
 
+    if (!algorithm_)
+      algorithm_ = new NGBlockLayoutAlgorithm(Style(), FirstChild(),
+                                              child_constraint_space);
+
     NGPhysicalFragment* fragment = nullptr;
-    if (!algorithm_->Layout(child_constraint_space, &fragment))
+    if (!algorithm_->Layout(&fragment))
       return false;
     fragment_ = fragment;
 
     if (layout_box_) {
       CopyFragmentDataToLayoutBox(*constraint_space);
     }
   } else {
     DCHECK(layout_box_);
     fragment_ = RunOldLayout(*constraint_space);
   }
@@ skipping 121 matching lines @@
       .SetBlockSize(layout_box_->logicalHeight())
       .SetDirection(FromPlatformDirection(layout_box_->styleRef().direction()))
       .SetWritingMode(
           FromPlatformWritingMode(layout_box_->styleRef().getWritingMode()))
       .SetInlineOverflow(overflow.width())
       .SetBlockOverflow(overflow.height());
   return builder.ToFragment();
 }
 
 }  // namespace blink