Move painting code from RenderDetailsMarker into DetailsMarkerPainter.

Source/core/paint/DetailsMarkerPainter.h

Index: Source/core/paint/DetailsMarkerPainter.h
diff --git a/Source/core/paint/DetailsMarkerPainter.h b/Source/core/paint/DetailsMarkerPainter.h
new file mode 100644
index 0000000000000000000000000000000000000000..e801a1fef62b993d53c0038d590bc6f151981174
--- /dev/null
+++ b/Source/core/paint/DetailsMarkerPainter.h
@@ -0,0 +1,30 @@
+// Copyright 2014 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 DetailsMarkerPainter_h
+#define DetailsMarkerPainter_h
+
+namespace blink {
+
+struct PaintInfo;
+class Path;
+class LayoutPoint;
+class RenderDetailsMarker;
+
+class DetailsMarkerPainter {
+public:
+    DetailsMarkerPainter(RenderDetailsMarker& renderDetailsMarker) : m_renderDetailsMarker(renderDetailsMarker) { }
+
+    void paint(PaintInfo&, const LayoutPoint& paintOffset);
+
+private:
+    Path getCanonicalPath() const;
+    Path getPath(const LayoutPoint& origin) const;
+
+    RenderDetailsMarker& m_renderDetailsMarker;
+};
+
+} // namespace blink
+
+#endif // DetailsMarkerPainter_h