Set objects to need full paint invalidation after clearing their invalidation rects.

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index fa5e387b18fac0cec4a0502c3c90637730fc4295..aaf32e4cd5df838ee002af3917955d188b0f65e2 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -2618,4 +2618,12 @@ String Internals::getProgrammaticScrollAnimationState(Node* node) const
     return String();
 }
 
+ClientRect* Internals::visualRect(Node* node)
+{
+    if (!node || !node->layoutObject())
+        return ClientRect::create();
+
+    return ClientRect::create(FloatRect(node->layoutObject()->visualRect()));
+}
+
 } // namespace blink