Disentangle blend mode from updateDescendantDependentFlags

Source/core/rendering/RenderLayerBlendInfo.h

Index: Source/core/rendering/RenderLayerBlendInfo.h
diff --git a/Source/core/rendering/RenderLayerBlendInfo.h b/Source/core/rendering/RenderLayerBlendInfo.h
deleted file mode 100644
index 4c807f221d7c20b61708a533494b3e08074a4650..0000000000000000000000000000000000000000
--- a/Source/core/rendering/RenderLayerBlendInfo.h
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
- * Copyright (C) 2013 Intel Corporation. All rights reserved.
- *
- * Portions are Copyright (C) 1998 Netscape Communications Corporation.
- *
- * Other contributors:
- *   Robert O'Callahan <roc+@cs.cmu.edu>
- *   David Baron <dbaron@fas.harvard.edu>
- *   Christian Biesinger <cbiesinger@web.de>
- *   Randall Jesup <rjesup@wgate.com>
- *   Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>
- *   Josh Soref <timeless@mac.com>
- *   Boris Zbarsky <bzbarsky@mit.edu>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Alternatively, the contents of this file may be used under the terms
- * of either the Mozilla Public License Version 1.1, found at
- * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
- * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
- * (the "GPL"), in which case the provisions of the MPL or the GPL are
- * applicable instead of those above.  If you wish to allow use of your
- * version of this file only under the terms of one of those two
- * licenses (the MPL or the GPL) and not to allow others to use your
- * version of this file under the LGPL, indicate your decision by
- * deletingthe provisions above and replace them with the notice and
- * other provisions required by the MPL or the GPL, as the case may be.
- * If you do not delete the provisions above, a recipient may use your
- * version of this file under any of the LGPL, the MPL or the GPL.
- */
-
-#ifndef RenderLayerBlendInfo_h
-#define RenderLayerBlendInfo_h
-
-#include "public/platform/WebBlendMode.h"
-#include "wtf/Assertions.h"
-#include "wtf/Noncopyable.h"
-
-namespace blink {
-
-class RenderLayerModelObject;
-
-class RenderLayerBlendInfo {
-    WTF_MAKE_NONCOPYABLE(RenderLayerBlendInfo);
-public:
-    explicit RenderLayerBlendInfo(RenderLayerModelObject&);
-
-    bool hasBlendMode() const;
-    void updateBlendMode();
-
-    bool childLayerHasBlendMode() const
-    {
-        ASSERT(!m_childLayerHasBlendModeStatusDirty);
-        return m_childLayerHasBlendMode;
-    }
-    bool childLayerHasBlendModeWhileDirty() const { return m_childLayerHasBlendMode; }
-
-    void setChildLayerHasBlendMode(bool b) { m_childLayerHasBlendMode = b; }
-
-    bool childLayerHasBlendModeStatusDirty() const { return m_childLayerHasBlendModeStatusDirty; }
-    void setChildLayerHasBlendModeStatusDirty(bool b) { m_childLayerHasBlendModeStatusDirty = b; }
-
-    void setAncestorChainBlendedDescendant();
-    void dirtyAncestorChainBlendedDescendantStatus();
-
-    blink::WebBlendMode blendMode() const { return m_blendMode; }
-
-private:
-    RenderLayerModelObject& m_renderer;
-    blink::WebBlendMode m_blendMode;
-
-    unsigned m_childLayerHasBlendMode : 1;
-    unsigned m_childLayerHasBlendModeStatusDirty : 1;
-};
-
-} // namespace blink
-
-#endif // RenderLayerBlendInfo_h