Initial import attempt, just to play with. Many things disabled/removed

ui/cc/RenderSurfaceChromium.cpp

Index: ui/cc/RenderSurfaceChromium.cpp
diff --git a/ui/cc/RenderSurfaceChromium.cpp b/ui/cc/RenderSurfaceChromium.cpp
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index 0000000000000000000000000000000000000000..51761453d833af6581262ffb6ba33aef87761054
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+++ b/ui/cc/RenderSurfaceChromium.cpp
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+/*
+ * Copyright (C) 2010 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "RenderSurfaceChromium.h"
+
+#include "LayerChromium.h"
+#include "cc/CCMathUtil.h"
+#include <public/WebTransformationMatrix.h>
+#include <wtf/text/CString.h>
+
+using WebKit::WebTransformationMatrix;
+
+namespace WebCore {
+
+RenderSurfaceChromium::RenderSurfaceChromium(LayerChromium* owningLayer)
+    : m_owningLayer(owningLayer)
+    , m_maskLayer(0)
+    , m_skipsDraw(false)
+    , m_drawOpacity(1)
+    , m_drawOpacityIsAnimating(false)
+    , m_targetSurfaceTransformsAreAnimating(false)
+    , m_screenSpaceTransformsAreAnimating(false)
+    , m_nearestAncestorThatMovesPixels(0)
+{
+}
+
+RenderSurfaceChromium::~RenderSurfaceChromium()
+{
+}
+
+FloatRect RenderSurfaceChromium::drawableContentRect() const
+{
+    FloatRect localContentRect(-0.5 * m_contentRect.width(), -0.5 * m_contentRect.height(),
+                               m_contentRect.width(), m_contentRect.height());
+    FloatRect drawableContentRect = m_drawTransform.mapRect(localContentRect);
+    if (m_owningLayer->replicaLayer())
+        drawableContentRect.unite(m_replicaDrawTransform.mapRect(localContentRect));
+
+    return drawableContentRect;
+}
+
+RenderSurfaceChromium* RenderSurfaceChromium::targetRenderSurface() const
+{
+    LayerChromium* parent = m_owningLayer->parent();
+    if (!parent)
+        return 0;
+    return parent->targetRenderSurface();
+}
+
+bool RenderSurfaceChromium::hasReplica() const
+{
+    return m_owningLayer->replicaLayer();
+}
+
+bool RenderSurfaceChromium::hasMask() const
+{
+    return m_maskLayer;
+}
+
+bool RenderSurfaceChromium::replicaHasMask() const
+{
+    return hasReplica() && (m_maskLayer || m_owningLayer->replicaLayer()->maskLayer());
+}
+
+FloatRect RenderSurfaceChromium::computeRootScissorRectInCurrentSurface(const FloatRect& rootScissorRect) const
+{
+    WebTransformationMatrix inverseScreenSpaceTransform = m_screenSpaceTransform.inverse();
+    return CCMathUtil::projectClippedRect(inverseScreenSpaceTransform, rootScissorRect);
+}
+
+}
+#endif // USE(ACCELERATED_COMPOSITING)