Revert "Move ViewDisplayList to GraphicsLayer"

Source/platform/graphics/paint/DisplayItem.h

Index: Source/platform/graphics/paint/DisplayItem.h
diff --git a/Source/platform/graphics/paint/DisplayItem.h b/Source/platform/graphics/paint/DisplayItem.h
deleted file mode 100644
index f47dda81fe99a6ce1fa5e46d63d873a7da9de11d..0000000000000000000000000000000000000000
--- a/Source/platform/graphics/paint/DisplayItem.h
+++ /dev/null
@@ -1,93 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef DisplayItem_h
-#define DisplayItem_h
-
-#include "platform/PlatformExport.h"
-
-#ifndef NDEBUG
-#include "wtf/text/WTFString.h"
-#endif
-
-namespace blink {
-
-class GraphicsContext;
-
-typedef void* DisplayItemClient;
-
-class PLATFORM_EXPORT DisplayItem {
-public:
-    enum Type {
-        // DisplayItem types must be kept in sync with PaintPhase.
-        DrawingPaintPhaseBlockBackground = 0,
-        DrawingPaintPhaseChildBlockBackground = 1,
-        DrawingPaintPhaseChildBlockBackgrounds = 2,
-        DrawingPaintPhaseFloat = 3,
-        DrawingPaintPhaseForeground = 4,
-        DrawingPaintPhaseOutline = 5,
-        DrawingPaintPhaseChildOutlines = 6,
-        DrawingPaintPhaseSelfOutline = 7,
-        DrawingPaintPhaseSelection = 8,
-        DrawingPaintPhaseCollapsedTableBorders = 9,
-        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,
-    };
-
-    virtual ~DisplayItem() { }
-
-    virtual void replay(GraphicsContext*) = 0;
-
-    DisplayItemClient client() const { return m_id.client; }
-    Type type() const { return m_id.type; }
-    bool idsEqual(const DisplayItem& other) const { return m_id.client == other.m_id.client && m_id.type == other.m_id.type; }
-
-#ifndef NDEBUG
-    static WTF::String typeAsDebugString(DisplayItem::Type);
-
-    void setClientDebugString(const WTF::String& clientDebugString) { m_clientDebugString = clientDebugString; }
-    const WTF::String& clientDebugString() const { return m_clientDebugString; }
-
-    virtual WTF::String asDebugString() const;
-#endif
-
-protected:
-    DisplayItem(DisplayItemClient client, Type type)
-        : m_id(client, type)
-    { }
-
-private:
-    struct Id {
-        Id(DisplayItemClient c, Type t)
-            : client(c)
-            , type(t)
-        { }
-
-        const DisplayItemClient client;
-        const Type type;
-    } m_id;
-#ifndef NDEBUG
-    WTF::String m_clientDebugString;
-#endif
-};
-
-}
-
-#endif // DisplayItem_h