Disable display item caching

Source/core/paint/LayerClipRecorderTest.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/LayerClipRecorder.h"
 
 #include "core/rendering/RenderView.h"
 #include "core/rendering/RenderingTestHelper.h"
 #include "core/rendering/compositing/RenderLayerCompositor.h"
@@ skipping 34 matching lines @@
     ClipRect clipRect(rect);
     LayerClipRecorder LayerClipRecorder(renderer->compositor()->rootRenderLayer()->renderer(), context, DisplayItem::ClipLayerForeground, clipRect, 0, LayoutPoint(), PaintLayerFlags());
 }
 
 TEST_F(LayerClipRecorderTest, LayerClipRecorderTest_Single)
 {
     GraphicsContext context(nullptr, &rootDisplayItemList());
     FloatRect bound = renderView()->viewRect();
     EXPECT_EQ((size_t)0, rootDisplayItemList().paintList().size());
 
+    rootDisplayItemList().beginNewPaints();
     drawClip(&context, renderView(), PaintPhaseForeground, bound);
+    rootDisplayItemList().endNewPaints();
     EXPECT_EQ((size_t)2, rootDisplayItemList().paintList().size());
 }
 
 }
 }