[LayoutNG] Add base class for NGFragment and NGText

third_party/WebKit/Source/core/layout/ng/ng_fragment.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 NGFragment_h
 #define NGFragment_h
 
 #include "core/CoreExport.h"
+#include "core/layout/ng/ng_fragment_base.h"
 #include "platform/LayoutUnit.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
-class CORE_EXPORT NGFragment final : public GarbageCollected<NGFragment> {
+class CORE_EXPORT NGFragment final : public NGFragmentBase {
  public:
   NGFragment(LayoutUnit inlineSize,
              LayoutUnit blockSize,
              LayoutUnit inlineOverflow,
-             LayoutUnit blockOverflow);
+             LayoutUnit blockOverflow)
+      : NGFragmentBase(inlineSize, blockSize, inlineOverflow, blockOverflow) {
+    m_isText = false;
+  }
 
-  // Returns the border-box size.
-  LayoutUnit inlineSize() const { return m_inlineSize; }
-  LayoutUnit blockSize() const { return m_blockSize; }
-
-  // Returns the total size, including the contents outside of the border-box.
-  LayoutUnit inlineOverflow() const { return m_inlineOverflow; }
-  LayoutUnit blockOverflow() const { return m_blockOverflow; }
-
-  // Returns the offset relative to the parent fragement's content-box.
-  LayoutUnit inlineOffset() const { return m_inlineOffset; }
-  LayoutUnit blockOffset() const { return m_blockOffset; }
-
-  // Should only be used by the parent fragement's layout.
-  void setOffset(LayoutUnit inlineOffset, LayoutUnit blockOffset);
-
-  DECLARE_TRACE();
+  DEFINE_INLINE_TRACE_AFTER_DISPATCH() {
+    visitor->trace(m_children);
+    NGFragmentBase::traceAfterDispatch(visitor);
+  }
 
  private:
-  LayoutUnit m_inlineSize;
-  LayoutUnit m_blockSize;
-
-  LayoutUnit m_inlineOverflow;
-  LayoutUnit m_blockOverflow;
-
-  LayoutUnit m_inlineOffset;
-  LayoutUnit m_blockOffset;
-
-  HeapVector<Member<const NGFragment>> m_children;
+  HeapVector<Member<const NGFragmentBase>> m_children;
+  bool m_isText;
 };
 
 }  // namespace blink
 
 #endif  // NGFragment_h