Enable fast/images with slimming paint

Source/core/paint/ViewDisplayList.h

Index: Source/core/paint/ViewDisplayList.h
diff --git a/Source/core/paint/ViewDisplayList.h b/Source/core/paint/ViewDisplayList.h
index 854e1bb65dca6eb2c8c0fafadce332668bd903e5..22c5abe939b8bd00095b9102101c7ad54afc46f3 100644
--- a/Source/core/paint/ViewDisplayList.h
+++ b/Source/core/paint/ViewDisplayList.h
@@ -32,35 +32,36 @@ public:
         DrawingPaintPhaseTextClip = 10,
         DrawingPaintPhaseMask = 11,
         DrawingPaintPhaseClippingMask = 12,
-        ClipLayerOverflowControls = 13,
-        ClipLayerBackground = 14,
-        ClipLayerParent = 15,
-        ClipLayerFilter = 16,
-        ClipLayerForeground = 17,
-        ClipLayerFragmentFloat = 18,
-        ClipLayerFragmentForeground = 19,
-        ClipLayerFragmentChildOutline = 20,
-        ClipLayerFragmentOutline = 21,
-        ClipLayerFragmentMask = 22,
-        ClipLayerFragmentClippingMask = 23,
-        ClipLayerFragmentParent = 24,
-        ClipLayerFragmentSelection = 25,
-        ClipLayerFragmentChildBlockBackgrounds = 26,
-        EndClip = 27,
-        BeginFilter = 28,
-        EndFilter = 29,
-        BeginTransparency = 30,
-        EndTransparency = 31,
-        ClipBoxChildBlockBackgrounds = 32,
-        ClipBoxFloat = 33,
-        ClipBoxForeground = 34,
-        ClipBoxChildOutlines = 35,
-        ClipBoxSelection = 36,
-        ClipBoxCollapsedTableBorders = 37,
-        ClipBoxTextClip = 38,
-        ClipBoxClippingMask = 39,
-        BeginTransform = 40,
-        EndTransform = 41
+        ClipLayerOverflowControls,
+        ClipLayerBackground,
+        ClipLayerParent,
+        ClipLayerFilter,
+        ClipLayerForeground,
+        ClipLayerFragmentFloat,
+        ClipLayerFragmentForeground,
+        ClipLayerFragmentChildOutline,
+        ClipLayerFragmentOutline,
+        ClipLayerFragmentMask,
+        ClipLayerFragmentClippingMask,
+        ClipLayerFragmentParent,
+        ClipLayerFragmentSelection,
+        ClipLayerFragmentChildBlockBackgrounds,
+        EndClip,
+        BeginFilter,
+        EndFilter,
+        TransparencyClip,
+        BeginTransparency,
+        EndTransparency,
+        ClipBoxChildBlockBackgrounds,
+        ClipBoxFloat,
+        ClipBoxForeground,
+        ClipBoxChildOutlines,
+        ClipBoxSelection,
+        ClipBoxCollapsedTableBorders,
+        ClipBoxTextClip,
+        ClipBoxClippingMask,
+        BeginTransform,
+        EndTransform
     };
 
     virtual ~DisplayItem() { }
@@ -71,6 +72,8 @@ public:
     Type type() const { return m_id.type; }
     bool idsEqual(const DisplayItem& other) const { return m_id.renderer == other.m_id.renderer && m_id.type == other.m_id.type; }
 
+    static Type paintPhaseToClipType(PaintPhase);
+
 #ifndef NDEBUG
     static WTF::String typeAsDebugString(DisplayItem::Type);
     static WTF::String rendererDebugString(const RenderObject*);