[LayoutNG] Change core/layout/ng to Chromium style and rename files.

third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm.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 NGBlockLayoutAlgorithm_h
+#define NGBlockLayoutAlgorithm_h
+
+#include "wtf/RefPtr.h"
+
+namespace blink {
+
+class ComputedStyle;
+class LayoutBox;
+class NGConstraintSpace;
+class NGFragment;
+
+// A class for general block layout (e.g. a <div> with no special style).
+// Lays out the children in sequence.
+class NGBlockLayoutAlgorithm {
+ public:
+  NGBlockLayoutAlgorithm(const ComputedStyle*);
+
+  // Actual layout implementation. Lays out the children in sequence within the
+  // constraints given by the NGConstraintSpace. Returns a fragment with the
+  // resulting layout information.
+  // This function can not be const because for interruptible layout, we have
+  // to be able to store state information.
+  NGFragment* layout(const NGConstraintSpace&);
+
+ private:
+  RefPtr<const ComputedStyle> m_style;
+};
+
+}  // namespace blink
+
+#endif  // NGBlockLayoutAlgorithm_h