[Line Layout API] Add LineLayoutSVGInline and LineLayoutSVGTextPath

third_party/WebKit/Source/core/layout/api/LineLayoutSVGInline.h

+// Copyright 2015 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 LineLayoutSVGInline_h
+#define LineLayoutSVGInline_h
+
+#include "core/layout/api/LineLayoutInline.h"
+#include "core/layout/svg/LayoutSVGInline.h"
+
+namespace blink {
+
+class LineLayoutSVGInline : public LineLayoutInline {
+public:
+    explicit LineLayoutSVGInline(LayoutSVGInline* layoutSVGInline)
+        : LineLayoutInline(layoutSVGInline)
+    {
+    }
+
+    explicit LineLayoutSVGInline(const LineLayoutItem& item)
+        : LineLayoutInline(item)
+    {
+        ASSERT(!item || item.isSVGInline());
+    }
+
+    explicit LineLayoutSVGInline(std::nullptr_t) : LineLayoutInline(nullptr) { }
+
+    LineLayoutSVGInline() { }
+
+private:
+    LayoutSVGInline* toSVGInline()
+    {
+        return toLayoutSVGInline(layoutObject());
+    }
+
+    const LayoutSVGInline* toSVGInline() const
+    {
+        return toLayoutSVGInline(layoutObject());
+    }
+};
+
+} // namespace blink
+
+#endif // LineLayoutSVGInline_h