Replace SPv2 check with DCHECK when it is always false

third_party/WebKit/Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 3216 matching lines @@
 
   forAllNonThrottledFrameViews([](FrameView& frameView) {
     frameView.lifecycle().advanceTo(DocumentLifecycle::PaintClean);
     LayoutViewItem layoutViewItem = frameView.layoutViewItem();
     if (!layoutViewItem.isNull())
       layoutViewItem.layer()->clearNeedsRepaintRecursively();
   });
 }
 
 void FrameView::paintGraphicsLayerRecursively(GraphicsLayer* graphicsLayer) {
+  DCHECK(!RuntimeEnabledFeatures::slimmingPaintV2Enabled());
   if (graphicsLayer->drawsContent()) {
     graphicsLayer->paint(nullptr);
     notifyPaint(graphicsLayer->getPaintController());
   }
 
-  if (!RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
-    if (GraphicsLayer* maskLayer = graphicsLayer->maskLayer())
-      paintGraphicsLayerRecursively(maskLayer);
-    if (GraphicsLayer* contentsClippingMaskLayer =
-            graphicsLayer->contentsClippingMaskLayer())
-      paintGraphicsLayerRecursively(contentsClippingMaskLayer);
-  }
+  if (GraphicsLayer* maskLayer = graphicsLayer->maskLayer())
+    paintGraphicsLayerRecursively(maskLayer);
+  if (GraphicsLayer* contentsClippingMaskLayer =
+          graphicsLayer->contentsClippingMaskLayer())
+    paintGraphicsLayerRecursively(contentsClippingMaskLayer);
 
   for (auto& child : graphicsLayer->children())
     paintGraphicsLayerRecursively(child);
 }
 
 void FrameView::pushPaintArtifactToCompositor() {
   TRACE_EVENT0("blink", "FrameView::pushPaintArtifactToCompositor");
 
   DCHECK(RuntimeEnabledFeatures::slimmingPaintV2Enabled());
 
@@ skipping 2003 matching lines @@
 void FrameView::setAnimationHost(
     std::unique_ptr<CompositorAnimationHost> host) {
   m_animationHost = std::move(host);
 }
 
 LayoutUnit FrameView::caretWidth() const {
   return LayoutUnit(getHostWindow()->windowToViewportScalar(1));
 }
 
 }  // namespace blink