Verify paintedOutputOfObjectHasNoEffectRegardlessOfSize during painting

third_party/WebKit/Source/platform/graphics/paint/DrawingRecorder.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 "platform/graphics/paint/DrawingRecorder.h"
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/paint/PaintController.h"
@@ skipping 61 matching lines @@
 
 #if DCHECK_IS_ON()
   if (RuntimeEnabledFeatures::slimmingPaintStrictCullRectClippingEnabled())
     m_context.restore();
 
   m_context.setInDrawingRecorder(false);
   DCHECK(m_displayItemPosition ==
          m_context.getPaintController().newDisplayItemList().size());
 #endif
 
+  sk_sp<const SkPicture> picture = m_context.endRecording();
+
+#if DCHECK_IS_ON()
+  if (!RuntimeEnabledFeatures::slimmingPaintStrictCullRectClippingEnabled() &&
+      !m_context.getPaintController().isForSkPictureBuilder() &&
+      m_displayItemClient.paintedOutputOfObjectHasNoEffectRegardlessOfSize()) {
+    DCHECK_EQ(0, picture->approximateOpCount())
+        << m_displayItemClient.debugName();
+  }
+#endif
+
   m_context.getPaintController().createAndAppend<DrawingDisplayItem>(
-      m_displayItemClient, m_displayItemType, m_context.endRecording(),
-      m_knownToBeOpaque);
+      m_displayItemClient, m_displayItemType, picture, m_knownToBeOpaque);
 }
 
 }  // namespace blink