Check rect under-invalidations

third_party/WebKit/Source/web/LinkHighlightImpl.cpp

Index: third_party/WebKit/Source/web/LinkHighlightImpl.cpp
diff --git a/third_party/WebKit/Source/web/LinkHighlightImpl.cpp b/third_party/WebKit/Source/web/LinkHighlightImpl.cpp
index 3fac9ec6e92249418a706b0507d354dad1137a67..f4a3cd26920f43d8ba0169c3bb18d6834ed96e57 100644
--- a/third_party/WebKit/Source/web/LinkHighlightImpl.cpp
+++ b/third_party/WebKit/Source/web/LinkHighlightImpl.cpp
@@ -366,8 +366,8 @@ void LinkHighlightImpl::updateGeometry()
             // we can just re-position the layer without needing to repaint.
             m_contentLayer->layer()->invalidate();
 
-            if (m_currentGraphicsLayer && m_currentGraphicsLayer->isTrackingPaintInvalidations())
-                m_currentGraphicsLayer->trackPaintInvalidation(LinkHighlightDisplayItemClientForTracking(), FloatRect(layer()->position().x, layer()->position().y, layer()->bounds().width, layer()->bounds().height), PaintInvalidationFull);
+            if (m_currentGraphicsLayer && m_currentGraphicsLayer->isTrackingOrCheckingPaintInvalidations())
+                m_currentGraphicsLayer->trackPaintInvalidation(LinkHighlightDisplayItemClientForTracking(), enclosingIntRect(FloatRect(layer()->position().x, layer()->position().y, layer()->bounds().width, layer()->bounds().height)), PaintInvalidationFull);
         }
     } else {
         clearGraphicsLayerLinkHighlightPointer();