Use DrawingRecorder::canUseCachedDrawing

Source/core/paint/ViewDisplayListTest.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/paint/RenderDrawingRecorder.h"
 #include "core/rendering/RenderView.h"
 #include "core/rendering/RenderingTestHelper.h"
@@ skipping 41 matching lines @@
     EXPECT_EQ((size_t)expectedSize, actual.size()); \
     const TestDisplayItem expected[] = { __VA_ARGS__ }; \
     for (size_t index = 0; index < expectedSize; index++) { \
         EXPECT_EQ(expected[index].client(), actual[index]->client()); \
         EXPECT_EQ(expected[index].type(), actual[index]->type()); \
     } \
 }
 
 void drawRect(GraphicsContext* context, RenderObject* renderer, PaintPhase phase, const FloatRect& bound)
 {
-    RenderDrawingRecorder drawingRecorder(context, renderer, phase, bound);
+    RenderDrawingRecorder drawingRecorder(context, *renderer, phase, bound);
+    if (drawingRecorder.canUseCachedDrawing())
+        return;
     IntRect rect(0, 0, 10, 10);
     context->drawRect(rect);
 }
 
 void drawClippedRect(GraphicsContext* context, RenderLayerModelObject* renderer, PaintPhase phase, const FloatRect& bound)
 {
     IntRect rect(1, 1, 9, 9);
     ClipRect clipRect(rect);
     LayerClipRecorder layerClipRecorder(renderer, context, DisplayItem::ClipLayerForeground, clipRect, 0, LayoutPoint(), PaintLayerFlags());
     drawRect(context, renderer, phase, bound);
@@ skipping 362 matching lines @@
     EXPECT_TRUE(rootDisplayItemList().clientCacheIsValid(firstRenderer->displayItemClient()));
     EXPECT_TRUE(rootDisplayItemList().clientCacheIsValid(secondRenderer->displayItemClient()));
 
     rootDisplayItemList().invalidateAll();
     EXPECT_FALSE(rootDisplayItemList().clientCacheIsValid(firstRenderer->displayItemClient()));
     EXPECT_FALSE(rootDisplayItemList().clientCacheIsValid(secondRenderer->displayItemClient()));
 }
 
 } // anonymous namespace
 } // namespace blink