Move paint code from RenderHTMLCanvas to HTMLCanvasPainter.

Source/core/paint/HTMLCanvasPainter.h

Index: Source/core/paint/HTMLCanvasPainter.h
diff --git a/Source/core/paint/HTMLCanvasPainter.h b/Source/core/paint/HTMLCanvasPainter.h
new file mode 100644
index 0000000000000000000000000000000000000000..376ab6f2c80d29bb1a47c66607f59cf1ab73d4a5
--- /dev/null
+++ b/Source/core/paint/HTMLCanvasPainter.h
@@ -0,0 +1,25 @@
+// 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 HTMLCanvasPainter_h
+#define HTMLCanvasPainter_h
+
+namespace blink {
+
+struct PaintInfo;
+class LayoutPoint;
+class RenderHTMLCanvas;
+
+class HTMLCanvasPainter {
+public:
+    HTMLCanvasPainter(RenderHTMLCanvas& renderHTMLCanvas) : m_renderHTMLCanvas(renderHTMLCanvas) { }
+    void paintReplaced(PaintInfo&, const LayoutPoint&);
+
+private:
+    RenderHTMLCanvas& m_renderHTMLCanvas;
+};
+
+} // namespace blink
+
+#endif // HTMLCanvasPainter_h