Run paint/invalidation with --disable-slimming-paint-invalidation

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base.py b/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base.py
index 885b52525f82f59edb4046ec016d9d2a56befb95..5f05da25c9fa824fb02655eb59bdcf5df1a8b42d 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base.py
@@ -1636,6 +1636,10 @@ class Port(object):
             # For example, to turn on force-compositing-mode in the svg/ directory:
             # PhysicalTestSuite('svg', ['--force-compositing-mode']),
             PhysicalTestSuite('fast/text', ["--enable-direct-write", "--enable-font-antialiasing"]),
+            # Run paint/invalidation with SlimmingPaintInvalidation disabled to ensure
+            # test coverage of the non-SlimmingPaintInvalidation path when SlimmingPaintInvalidation
+            # is enabled for virtual/spinvalidation/paint/invalidation and all other layout tests.
+            PhysicalTestSuite('paint/invalidation', ['--disable-slimming-paint-invalidation']),
         ]
 
     def virtual_test_suites(self):