NGPhysicalFragment implementation to cc file

third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.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_physical_fragment.h"
+#include "core/layout/ng/ng_block_layout_algorithm.h"
+#include "core/layout/ng/ng_box.h"
+#include "core/style/ComputedStyle.h"
+
+namespace blink {
+
+NGPhysicalFragment::NGPhysicalFragment(
+    NGPhysicalSize size,
+    NGPhysicalSize overflow,
+    HeapVector<Member<const NGPhysicalFragmentBase>>& children,
+    NGMarginStrut margin_strut)
+    : NGPhysicalFragmentBase(size, overflow, FragmentBox),
+      margin_strut_(margin_strut) {
+  children_.swap(children);
+}
+
+DEFINE_TRACE_AFTER_DISPATCH(NGPhysicalFragment) {
+  visitor->trace(children_);
+  NGPhysicalFragmentBase::traceAfterDispatch(visitor);
+}
+
+}  // namespace blink