Let slimmingPaintInvalidation plumbing work for spv1

third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp

Index: third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
diff --git a/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp b/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
index bda1b08750901d19c77405935a8e6586670a57fb..d61e401ef28ecdcfb032ea4fa85d80dd354f6b01 100644
--- a/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
+++ b/third_party/WebKit/Source/core/layout/PaintInvalidationState.cpp
@@ -52,6 +52,8 @@ PaintInvalidationState::PaintInvalidationState(const LayoutView& layoutView, Vec
     , m_canCheckFastPathSlowPathEquality(layoutView == m_paintInvalidationContainer)
 #endif
 {
+    DCHECK(!RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled());
+
     if (!supportsCachedOffsets(layoutView)) {
         m_cachedOffsetsEnabled = false;
         return;
@@ -86,6 +88,7 @@ PaintInvalidationState::PaintInvalidationState(const PaintInvalidationState& par
     , m_canCheckFastPathSlowPathEquality(parentState.m_canCheckFastPathSlowPathEquality)
 #endif
 {
+    DCHECK(!RuntimeEnabledFeatures::slimmingPaintInvalidationEnabled());
     DCHECK(&m_paintingLayer == currentObject.paintingLayer());
 
     if (currentObject == parentState.m_currentObject) {