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

ui/cc/cc/CCDrawQuad.h

Index: ui/cc/cc/CCDrawQuad.h
diff --git a/ui/cc/cc/CCDrawQuad.h b/ui/cc/cc/CCDrawQuad.h
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index 0000000000000000000000000000000000000000..756b68036dd66377e451d2e1720a8aa74a8f10e0
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+++ b/ui/cc/cc/CCDrawQuad.h
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+/*
+ * Copyright (C) 2011 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.
+ */
+
+#ifndef CCDrawQuad_h
+#define CCDrawQuad_h
+
+#include "cc/CCSharedQuadState.h"
+
+namespace WebCore {
+
+class CCCheckerboardDrawQuad;
+class CCDebugBorderDrawQuad;
+class CCIOSurfaceDrawQuad;
+class CCRenderPassDrawQuad;
+class CCSolidColorDrawQuad;
+class CCStreamVideoDrawQuad;
+class CCTextureDrawQuad;
+class CCTileDrawQuad;
+class CCYUVVideoDrawQuad;
+
+// CCDrawQuad is a bag of data used for drawing a quad. Because different
+// materials need different bits of per-quad data to render, classes that derive
+// from CCDrawQuad store additional data in their derived instance. The Material
+// enum is used to "safely" upcast to the derived class.
+class CCDrawQuad {
+    WTF_MAKE_NONCOPYABLE(CCDrawQuad);
+public:
+    const IntRect& quadRect() const { return m_quadRect; }
+    const WebKit::WebTransformationMatrix& quadTransform() const { return m_sharedQuadState->quadTransform(); }
+    const WebKit::WebTransformationMatrix& layerTransform() const { return m_sharedQuadState->layerTransform(); }
+    const IntRect& layerRect() const { return m_sharedQuadState->layerRect(); }
+    const IntRect& scissorRect() const { return m_sharedQuadState->scissorRect(); }
+    float opacity() const { return m_sharedQuadState->opacity(); }
+    // For the purposes of blending, what part of the contents of this quad are opaque?
+    IntRect opaqueRect() const;
+    bool needsBlending() const { return m_needsBlending || !opaqueRect().contains(m_quadVisibleRect); }
+    bool isLayerAxisAlignedIntRect() const { return m_sharedQuadState->isLayerAxisAlignedIntRect(); }
+
+    // Allows changing the rect that gets drawn to make it smaller. Parameter passed
+    // in will be clipped to quadRect().
+    void setQuadVisibleRect(const IntRect&);
+    const IntRect& quadVisibleRect() const { return m_quadVisibleRect; }
+
+    enum Material {
+        Invalid,
+        Checkerboard,
+        DebugBorder,
+        IOSurfaceContent,
+        RenderPass,
+        TextureContent,
+        SolidColor,
+        TiledContent,
+        YUVVideoContent,
+        StreamVideoContent,
+    };
+
+    Material material() const { return m_material; }
+    bool isDebugQuad() const { return m_material == DebugBorder; }
+
+    const CCCheckerboardDrawQuad* toCheckerboardDrawQuad() const;
+    const CCDebugBorderDrawQuad* toDebugBorderDrawQuad() const;
+    const CCIOSurfaceDrawQuad* toIOSurfaceDrawQuad() const;
+    const CCRenderPassDrawQuad* toRenderPassDrawQuad() const;
+    const CCSolidColorDrawQuad* toSolidColorDrawQuad() const;
+    const CCStreamVideoDrawQuad* toStreamVideoDrawQuad() const;
+    const CCTextureDrawQuad* toTextureDrawQuad() const;
+    const CCTileDrawQuad* toTileDrawQuad() const;
+    const CCYUVVideoDrawQuad* toYUVVideoDrawQuad() const;
+
+    const CCSharedQuadState* sharedQuadState() const { return m_sharedQuadState; }
+
+protected:
+    CCDrawQuad(const CCSharedQuadState*, Material, const IntRect&);
+
+    const CCSharedQuadState* m_sharedQuadState;
+
+    Material m_material;
+    IntRect m_quadRect;
+    IntRect m_quadVisibleRect;
+
+    // By default, the shared quad state determines whether or not this quad is
+    // opaque or needs blending. Derived classes can override with these
+    // variables.
+    bool m_quadOpaque;
+    bool m_needsBlending;
+
+    // Be default, this rect is empty. It is used when the shared quad state and above
+    // variables determine that the quad is not fully opaque but may be partially opaque.
+    IntRect m_opaqueRect;
+};
+
+}
+
+#endif