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

Source/core/rendering/RenderLayer.h

Index: Source/core/rendering/RenderLayer.h
diff --git a/Source/core/rendering/RenderLayer.h b/Source/core/rendering/RenderLayer.h
index d48d8448369f91a96d0105e4565930c5643759d3..7fd862b8da377d2344db02d9859f834c02296239 100644
--- a/Source/core/rendering/RenderLayer.h
+++ b/Source/core/rendering/RenderLayer.h
@@ -598,6 +598,9 @@ private:
     bool hasNonCompositedChild() const { return m_compositingProperties.hasNonCompositedChild; }
     void setHasNonCompositedChild(bool b)  { m_compositingProperties.hasNonCompositedChild = b; }
 
+    bool requiresIsolationForCompositedStackingContext() const { return m_requiresIsolationForCompositedStackingContext; }
+    void setRequiresIsolationForCompositedStackingContext(bool b)  { m_requiresIsolationForCompositedStackingContext = b; }
+
     void setCompositingReasons(CompositingReasons reasons) { m_compositingProperties.compositingReasons = reasons; }
     CompositingReasons compositingReasons() const { return m_compositingProperties.compositingReasons; }
 
@@ -656,6 +659,8 @@ protected:
 
     unsigned m_hasFilterInfo : 1;
 
+    unsigned m_requiresIsolationForCompositedStackingContext : 1;
+
     BlendMode m_blendMode;
 
     RenderLayerModelObject* m_renderer;