Remove will-change: contents GPU rasterization hint

Source/platform/graphics/GraphicsLayer.h

Index: Source/platform/graphics/GraphicsLayer.h
diff --git a/Source/platform/graphics/GraphicsLayer.h b/Source/platform/graphics/GraphicsLayer.h
index 68a39225667ad16aa22ff2956324d197589d6d6e..18b02f904fc155b14dfad79cf64327a77d38a13d 100644
--- a/Source/platform/graphics/GraphicsLayer.h
+++ b/Source/platform/graphics/GraphicsLayer.h
@@ -205,9 +205,6 @@ public:
     bool isRootForIsolatedGroup() const { return m_isRootForIsolatedGroup; }
     void setIsRootForIsolatedGroup(bool);
 
-    bool hasGpuRasterizationHint() const { return m_hasGpuRasterizationHint; }
-    void setHasGpuRasterizationHint(bool);
-
     const FilterOperations& filters() const { return m_filters; }
 
     // Returns true if filter can be rendered by the compositor
@@ -362,7 +359,6 @@ private:
     bool m_drawsContent : 1;
     bool m_contentsVisible : 1;
     bool m_isRootForIsolatedGroup : 1;
-    bool m_hasGpuRasterizationHint: 1;
 
     bool m_hasScrollParent : 1;
     bool m_hasClipParent : 1;