[cc] Add window decoration layers (NinePatch)

webkit/compositor_bindings/WebDecorationLayerImpl.cpp

+// Copyright 2012 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 "WebDecorationLayerImpl.h"
+
+#include "DecorationLayerChromium.h"
+#include "SkBitmap.h"
+#include "WebLayerImpl.h"
+#include "webcore_convert.h"
+
+using cc::DecorationLayerChromium;
+
+namespace WebKit {
+
+WebDecorationLayer* WebDecorationLayer::create()
+{
+    return new WebDecorationLayerImpl();
+}
+
+WebDecorationLayerImpl::WebDecorationLayerImpl()
+    : m_layer(adoptPtr(new WebLayerImpl(DecorationLayerChromium::create())))
+{
+    m_layer->layer()->setIsDrawable(true);
+}
+
+WebDecorationLayerImpl::~WebDecorationLayerImpl()
+{
+}
+
+WebLayer* WebDecorationLayerImpl::layer()
+{
+    return m_layer.get();
+}
+
+void WebDecorationLayerImpl::setBitmap(const SkBitmap& bitmap, const WebRect& aperture) {
+    static_cast<DecorationLayerChromium*>(m_layer->layer())->setBitmap(bitmap, convert(aperture));
+}
+
+} // namespace WebKit