Disable rootLayerScrolls versions of unit tests on Mac Oilpan.

Source/web/tests/WebFrameTest.cpp

Index: Source/web/tests/WebFrameTest.cpp
diff --git a/Source/web/tests/WebFrameTest.cpp b/Source/web/tests/WebFrameTest.cpp
index 0dd11957226bb663f2cd5f3f809ecfd5a8931602..32ecf1a46c2d059dc8b599180a729e3ebee284dd 100644
--- a/Source/web/tests/WebFrameTest.cpp
+++ b/Source/web/tests/WebFrameTest.cpp
@@ -292,9 +292,15 @@ void PrintTo(ParameterizedWebFrameTestConfig config, ::std::ostream* os)
     }
 }
 
+#if OS(MACOSX) && ENABLE(OILPAN)
+// FIXME(504655): RootLayerScrolls configuration crashes on Mac Oilpan bots.
+INSTANTIATE_TEST_CASE_P(All, ParameterizedWebFrameTest, ::testing::Values(
+    ParameterizedWebFrameTestConfig::Default));
+#else
 INSTANTIATE_TEST_CASE_P(All, ParameterizedWebFrameTest, ::testing::Values(
     ParameterizedWebFrameTestConfig::Default,
     ParameterizedWebFrameTestConfig::RootLayerScrolls));
+#endif
 
 TEST_P(ParameterizedWebFrameTest, ContentText)
 {
@@ -2217,9 +2223,15 @@ protected:
     }
 };
 
+#if OS(MACOSX) && ENABLE(OILPAN)
+// FIXME(504655): RootLayerScrolls configuration crashes on Mac Oilpan bots.
+INSTANTIATE_TEST_CASE_P(All, WebFrameResizeTest, ::testing::Values(
+    ParameterizedWebFrameTestConfig::Default));
+#else
 INSTANTIATE_TEST_CASE_P(All, WebFrameResizeTest, ::testing::Values(
     ParameterizedWebFrameTestConfig::Default,
     ParameterizedWebFrameTestConfig::RootLayerScrolls));
+#endif
 
 TEST_P(WebFrameResizeTest, ResizeYieldsCorrectScrollAndScaleForWidthEqualsDeviceWidth)
 {