Plumb border radius through when computing clip visual rects.

third_party/WebKit/Source/core/paint/PaintInvalidator.cpp

Index: third_party/WebKit/Source/core/paint/PaintInvalidator.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintInvalidator.cpp b/third_party/WebKit/Source/core/paint/PaintInvalidator.cpp
index 162dba32b6183e8b0deb73e4ab29ff2b4d503dc2..26e563676eb6fcfb1852344ebcb38a311f5740bb 100644
--- a/third_party/WebKit/Source/core/paint/PaintInvalidator.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintInvalidator.cpp
@@ -117,8 +117,11 @@ static LayoutRect mapLocalRectToPaintInvalidationBacking(
       PropertyTreeState currentTreeState(
           context.treeBuilderContext.current.transform,
           context.treeBuilderContext.current.clip, nullptr);
-      result = LayoutRect(geometryMapper.sourceToDestinationVisualRect(
-          FloatRect(rect), currentTreeState, *containerContentsProperties));
+      result = LayoutRect(
+          geometryMapper
+              .sourceToDestinationVisualRect(FloatRect(rect), currentTreeState,
+                                             *containerContentsProperties)
+              .rect());
     }
 
     // Convert the result to the container's contents space.