WIP for display item list backed by ListContainer

Source/core/paint/CompositingRecorder.cpp

 // 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.
 
 #include "config.h"
 #include "core/paint/CompositingRecorder.h"
 
 #include "core/layout/LayoutObject.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/paint/CompositingDisplayItem.h"
 #include "platform/graphics/paint/DisplayItemList.h"
 
 namespace blink {
 
 CompositingRecorder::CompositingRecorder(GraphicsContext& graphicsContext, const DisplayItemClientWrapper& client, const SkXfermode::Mode xferMode, const float opacity, const FloatRect* bounds, ColorFilter colorFilter)
     : m_client(client)
     , m_graphicsContext(graphicsContext)
 {
     beginCompositing(graphicsContext, m_client, xferMode, opacity, bounds, colorFilter);
 }
 
 CompositingRecorder::~CompositingRecorder()
 {
     endCompositing(m_graphicsContext, m_client);
 }
 
 void CompositingRecorder::beginCompositing(GraphicsContext& graphicsContext, const DisplayItemClientWrapper& client, const SkXfermode::Mode xferMode, const float opacity, const FloatRect* bounds, ColorFilter colorFilter)
 {
-    if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
-        ASSERT(graphicsContext.displayItemList());
-        if (graphicsContext.displayItemList()->displayItemConstructionIsDisabled())
-            return;
-        graphicsContext.displayItemList()->add(BeginCompositingDisplayItem::create(client, xferMode, opacity, bounds, colorFilter));
-    } else {
-        BeginCompositingDisplayItem beginCompositingDisplayItem(client, xferMode, opacity, bounds, colorFilter);
-        beginCompositingDisplayItem.replay(graphicsContext);
-    }
+    ALLOW_UNUSED_LOCAL(graphicsContext);
+    ALLOW_UNUSED_LOCAL(client);
+    ALLOW_UNUSED_LOCAL(opacity);
+    ALLOW_UNUSED_LOCAL(bounds);
+    ALLOW_UNUSED_LOCAL(colorFilter);
+    //if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
+    //    ASSERT(graphicsContext.displayItemList());
+    //    if (graphicsContext.displayItemList()->displayItemConstructionIsDisabled())
+    //        return;
+    //    graphicsContext.displayItemList()->add(BeginCompositingDisplayItem::create(client, xferMode, opacity, bounds, colorFilter));
+    //} else {
+    //    BeginCompositingDisplayItem beginCompositingDisplayItem(client, xferMode, opacity, bounds, colorFilter);
+    //    beginCompositingDisplayItem.replay(graphicsContext);
+    //}
 }
 
 void CompositingRecorder::endCompositing(GraphicsContext& graphicsContext, const DisplayItemClientWrapper& client)
 {
-    if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
-        ASSERT(graphicsContext.displayItemList());
-        if (!graphicsContext.displayItemList()->displayItemConstructionIsDisabled()) {
-            if (graphicsContext.displayItemList()->lastDisplayItemIsNoopBegin())
-                graphicsContext.displayItemList()->removeLastDisplayItem();
-            else
-                graphicsContext.displayItemList()->add(EndCompositingDisplayItem::create(client));
-        }
-    } else {
-        EndCompositingDisplayItem endCompositingDisplayItem(client);
-        endCompositingDisplayItem.replay(graphicsContext);
-    }
+    //if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
+    //    ASSERT(graphicsContext.displayItemList());
+    //    if (!graphicsContext.displayItemList()->displayItemConstructionIsDisabled()) {
+    //        if (graphicsContext.displayItemList()->lastDisplayItemIsNoopBegin())
+    //            graphicsContext.displayItemList()->removeLastDisplayItem();
+    //        else
+    //            graphicsContext.displayItemList()->add(EndCompositingDisplayItem::create(client));
+    //    }
+    //} else {
+    //    EndCompositingDisplayItem endCompositingDisplayItem(client);
+    //    endCompositingDisplayItem.replay(graphicsContext);
+    //}
 }
 
 } // namespace blink