[LayoutNG] Introduces NGPhysicalConstraintSpace and makes NGConstraintSpace a "view".

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

Index: third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.cc b/third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.cc
new file mode 100644
index 0000000000000000000000000000000000000000..dbb82c2d9e360550af535a1014f66bf4a5962612
--- /dev/null
+++ b/third_party/WebKit/Source/core/layout/ng/ng_physical_constraint_space.cc
@@ -0,0 +1,45 @@
+// 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_physical_constraint_space.h"
+
+#include "core/layout/LayoutBox.h"
+#include "core/style/ComputedStyle.h"
+
+namespace blink {
+
+NGPhysicalConstraintSpace::NGPhysicalConstraintSpace()
+    : fixed_width_(0),
+      fixed_height_(0),
+      width_direction_triggers_scrollbar_(0),
+      height_direction_triggers_scrollbar_(0),
+      width_direction_fragmentation_type_(FragmentNone),
+      height_direction_fragmentation_type_(FragmentNone) {}
+
+NGPhysicalConstraintSpace::NGPhysicalConstraintSpace(
+    const NGPhysicalConstraintSpace& other)
+    : fixed_width_(other.fixed_width_),
+      fixed_height_(other.fixed_height_),
+      width_direction_triggers_scrollbar_(
+          other.width_direction_triggers_scrollbar_),
+      height_direction_triggers_scrollbar_(
+          other.height_direction_triggers_scrollbar_),
+      width_direction_fragmentation_type_(
+          other.width_direction_fragmentation_type_),
+      height_direction_fragmentation_type_(
+          other.height_direction_fragmentation_type_) {}
+
+void NGPhysicalConstraintSpace::AddExclusion(const NGExclusion,
+                                             unsigned options) {
+  // TODO(layout-ng): Implement.
+}
+
+DoublyLinkedList<const NGExclusion> NGPhysicalConstraintSpace::Exclusions(
+    unsigned options) const {
+  DoublyLinkedList<const NGExclusion> exclusions;
+  // TODO(layout-ng): Implement.
+  return exclusions;
+}
+
+}  // namespace blink