mix-blend-mode implementation for accelerated layers - blink part

Source/core/platform/graphics/GraphicsLayer.h

Index: Source/core/platform/graphics/GraphicsLayer.h
diff --git a/Source/core/platform/graphics/GraphicsLayer.h b/Source/core/platform/graphics/GraphicsLayer.h
index 1870c88ace69138548134a84a30c651b18382377..54e9ac25031661cef32057655779e6a4dd73bbb7 100644
--- a/Source/core/platform/graphics/GraphicsLayer.h
+++ b/Source/core/platform/graphics/GraphicsLayer.h
@@ -202,6 +202,12 @@ public:
     float opacity() const { return m_opacity; }
     void setOpacity(float);
 
+    BlendMode blendMode() const { return m_blendMode; }
+    void setBlendMode(BlendMode);
+
+    bool isRootForIsolatedGroup() const { return m_isRootForIsolatedGroup; }
+    void setIsRootForIsolatedGroup(bool);
+
     const FilterOperations& filters() const { return m_filters; }
 
     // Returns true if filter can be rendered by the compositor
@@ -367,6 +373,8 @@ private:
     float m_opacity;
     float m_zPosition;
 
+    BlendMode m_blendMode;
+
     FilterOperations m_filters;
 
     bool m_contentsOpaque : 1;
@@ -375,6 +383,7 @@ private:
     bool m_masksToBounds : 1;
     bool m_drawsContent : 1;
     bool m_contentsVisible : 1;
+    bool m_isRootForIsolatedGroup : 1;
 
     bool m_hasScrollParent : 1;
     bool m_hasClipParent : 1;