Move painting code from RenderBoxModelObject into BoxPainter.

Source/core/paint/BackgroundImageGeometry.cpp

Index: Source/core/paint/BackgroundImageGeometry.cpp
diff --git a/Source/core/paint/BackgroundImageGeometry.cpp b/Source/core/paint/BackgroundImageGeometry.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..bc59f40eafd48ff2ecde3afb4c16db7931148931
--- /dev/null
+++ b/Source/core/paint/BackgroundImageGeometry.cpp
@@ -0,0 +1,41 @@
+// 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.
+
+#include "config.h"
+#include "core/paint/BackgroundImageGeometry.h"
+
+namespace blink {
+
+void BackgroundImageGeometry::setNoRepeatX(int xOffset)
+{
+    m_destRect.move(std::max(xOffset, 0), 0);
+    m_phase.setX(-std::min(xOffset, 0));
+    m_destRect.setWidth(m_tileSize.width() + std::min(xOffset, 0));
+}
+void BackgroundImageGeometry::setNoRepeatY(int yOffset)
+{
+    m_destRect.move(0, std::max(yOffset, 0));
+    m_phase.setY(-std::min(yOffset, 0));
+    m_destRect.setHeight(m_tileSize.height() + std::min(yOffset, 0));
+}
+
+void BackgroundImageGeometry::useFixedAttachment(const IntPoint& attachmentPoint)
+{
+    IntPoint alignedPoint = attachmentPoint;
+    m_phase.move(std::max(alignedPoint.x() - m_destRect.x(), 0), std::max(alignedPoint.y() - m_destRect.y(), 0));
+}
+
+void BackgroundImageGeometry::clip(const IntRect& clipRect)
+{
+    m_destRect.intersect(clipRect);
+}
+
+IntPoint BackgroundImageGeometry::relativePhase() const
+{
+    IntPoint phase = m_phase;
+    phase += m_destRect.location() - m_destOrigin;
+    return phase;
+}
+
+} // namespace blink