Revert of Move ViewDisplayList to GraphicsLayer

Source/platform/graphics/GraphicsLayer.cpp

Index: Source/platform/graphics/GraphicsLayer.cpp
diff --git a/Source/platform/graphics/GraphicsLayer.cpp b/Source/platform/graphics/GraphicsLayer.cpp
index f8097beb8df897d7ea819d7a105dd9e99b72d98a..057dda0a514e0ebd433223767ac9da4cf07e0471 100644
--- a/Source/platform/graphics/GraphicsLayer.cpp
+++ b/Source/platform/graphics/GraphicsLayer.cpp
@@ -28,16 +28,13 @@
 
 #include "SkImageFilter.h"
 #include "SkMatrix44.h"
-#include "platform/RuntimeEnabledFeatures.h"
 #include "platform/TraceEvent.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/LayoutRect.h"
 #include "platform/graphics/FirstPaintInvalidationTracking.h"
-#include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/GraphicsLayerFactory.h"
 #include "platform/graphics/Image.h"
 #include "platform/graphics/filters/SkiaImageFilterBuilder.h"
-#include "platform/graphics/paint/DisplayItemList.h"
 #include "platform/graphics/skia/NativeImageSkia.h"
 #include "platform/scroll/ScrollableArea.h"
 #include "platform/text/TextStream.h"
@@ -274,20 +271,6 @@ void GraphicsLayer::paintGraphicsLayerContents(GraphicsContext& context, const I
         m_debugInfo.clearAnnotatedInvalidateRects();
     incrementPaintCount();
     m_client->paintContents(this, context, m_paintingPhase, clip);
-
-    if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
-
-#ifndef NDEBUG
-        context.fillRect(clip, Color(0xFF, 0, 0));
-#endif
-        // FIXME: This is incorrect for squashed layers.
-        // We should do proper translation in CompositedLayerMapping once transform paint item is implemented.
-        context.translate(-m_offsetFromRenderer.width(), -m_offsetFromRenderer.height());
-        const PaintList& paintList = displayItemList().paintList();
-        for (PaintList::const_iterator it = paintList.begin(); it != paintList.end(); ++it)
-            (*it)->replay(&context);
-        context.translate(m_offsetFromRenderer.width(), m_offsetFromRenderer.height());
-    }
 }
 
 void GraphicsLayer::updateChildList()
@@ -1072,14 +1055,6 @@ void GraphicsLayer::didScroll()
     }
 }
 
-DisplayItemList& GraphicsLayer::displayItemList()
-{
-    ASSERT(RuntimeEnabledFeatures::slimmingPaintEnabled());
-    if (!m_displayItemList)
-        m_displayItemList = adoptPtr(new DisplayItemList());
-    return *m_displayItemList;
-}
-
 } // namespace blink
 
 #ifndef NDEBUG