Verify paintedOutputOfObjectHasNoEffectRegardlessOfSize during painting

third_party/WebKit/Source/platform/graphics/paint/DrawingRecorder.cpp

Index: third_party/WebKit/Source/platform/graphics/paint/DrawingRecorder.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/paint/DrawingRecorder.cpp b/third_party/WebKit/Source/platform/graphics/paint/DrawingRecorder.cpp
index 351681624e5cdfdecfd198236ce1c1fc3a8103fd..6dc9701977ff0885244a9a779dc38f62f68f32df 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/DrawingRecorder.cpp
+++ b/third_party/WebKit/Source/platform/graphics/paint/DrawingRecorder.cpp
@@ -79,9 +79,19 @@ DrawingRecorder::~DrawingRecorder() {
          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